请教offer size是不是就是ask size？
问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2015122802000026 问题如下 Consir the following limit orr book for a stock. The bianask sizes are number of shares in hune. A new buy limit orr is placefor 300 shares ¥123.40. This limit orr is saito: A.take the market. B.make the market. C.make a new market. is correct.This orr is saito make a new market. The new buy orr is ¥123.40, whiis better ththe current best biof ¥123.35. Therefore, the buy orr is making a new market. Hthe new orr been ¥123.35, it woulsaito make the market. Because the new buy limit orr is a priless ththe best offer of ¥123.80, it will not immeately execute anis not taking the market.考点Execution Instructions题目列出了当前市场上aler的买卖报价，现在市场中出现一个新的买价以123.4买300股。问该买单可以被看作是报价可以成交。take the market就是以报出的指令价格成交。打比比方buy orr价格正好等于best ask，立即成交了，这就是take the market。但是现在报价123.4低于aler最低的卖价123.8，因此该订单没法成交。B.可以看作是一次做市。make the market指如若买价报在best bi卖价报在 best ask,就是一次做市。本题的best bi best ask分别为123.35和123.8，而新报的买价是123.4没有落在123.35，所以这不叫make the market。C.可以看作是做了一个新市。make a new market, 它是指报价报在最高的bi最低ask之间就叫做make a new market。根据aler的买卖报价，make a new market的范围是（123.35-123.8）也就是best bibest ask，而123.4正好落在这个区间，所以是make a new market. 这里如果是take the market 或者是make the market的成交价分别是多少呢
NO.PZ2015122802000026问题如下Consir the following limit orr book for a stock. The bianask sizes are number of shares in hune. A new buy limit orr is placefor 300 shares ¥123.40. This limit orr is saito: A.take the market. B.make the market. C.make a new market. is correct.This orr is saito make a new market. The new buy orr is ¥123.40, whiis better ththe current best biof ¥123.35. Therefore, the buy orr is making a new market. Hthe new orr been ¥123.35, it woulsaito make the market. Because the new buy limit orr is a priless ththe best offer of ¥123.80, it will not immeately execute anis not taking the market.考点Execution Instructions题目列出了当前市场上aler的买卖报价，现在市场中出现一个新的买价以123.4买300股。问该买单可以被看作是报价可以成交。take the market就是以报出的指令价格成交。打比比方buy orr价格正好等于best ask，立即成交了，这就是take the market。但是现在报价123.4低于aler最低的卖价123.8，因此该订单没法成交。B.可以看作是一次做市。make the market指如若买价报在best bi卖价报在 best ask,就是一次做市。本题的best bi best ask分别为123.35和123.8，而新报的买价是123.4没有落在123.35，所以这不叫make the market。C.可以看作是做了一个新市。make a new market, 它是指报价报在最高的bi最低ask之间就叫做make a new market。根据aler的买卖报价，make a new market的范围是（123.35-123.8）也就是best bibest ask，而123.4正好落在这个区间，所以是make a new market. ask报在123.8以上还是必须等于123.8才叫做make a market？
NO.PZ2015122802000026 make the market. make a new market. C is correct. This orr is saito make a new market. The new buy orr is ¥123.40, whiis better ththe current best biof ¥123.35. Therefore, the buy orr is making a new market. Hthe new orr been ¥123.35, it woulsaito make the market. Because the new buy limit orr is a priless ththe best offer of ¥123.80, it will not immeately execute anis not taking the market. 考点Execution Instructions 题目列出了当前市场上aler的买卖报价，现在市场中出现一个新的买价以123.4买300股。问该买单可以被看作是 报价可以成交。take the market就是以报出的指令价格成交。打比比方buy orr价格正好等于best ask，立即成交了，这就是take the market。但是现在报价123.4低于aler最低的卖价123.8，因此该订单没法成交。 B.可以看作是一次做市。make the market指如若买价报在best bi卖价报在 best ask,就是一次做市。本题的best bi best ask分别为123.35和123.8，而新报的买价是123.4没有落在123.35，所以这不叫make the market。 C.可以看作是做了一个新市。make a new market, 它是指报价报在最高的bi最低ask之间就叫做make a new market。根据aler的买卖报价，make a new market的范围是（123.35-123.8）也就是best bibest ask，而123.4正好落在这个区间，所以是make a new market. 如题。。。。。。，。，
NO.PZ2015122802000026 make the market. make a new market. C is correct. This orr is saito make a new market. The new buy orr is ¥123.40, whiis better ththe current best biof ¥123.35. Therefore, the buy orr is making a new market. Hthe new orr been ¥123.35, it woulsaito make the market. Because the new buy limit orr is a priless ththe best offer of ¥123.80, it will not immeately execute anis not taking the market. 考点Execution Instructions 题目列出了当前市场上aler的买卖报价，现在市场中出现一个新的买价以123.4买300股。问该买单可以被看作是 报价可以成交。take the market就是以报出的指令价格成交。打比比方buy orr价格正好等于best ask，立即成交了，这就是take the market。但是现在报价123.4低于aler最低的卖价123.8，因此该订单没法成交。 B.可以看作是一次做市。make the market指如若买价报在best bi卖价报在 best ask,就是一次做市。本题的best bi best ask分别为123.35和123.8，而新报的买价是123.4没有落在123.35，所以这不叫make the market。 C.可以看作是做了一个新市。make a new market, 它是指报价报在最高的bi最低ask之间就叫做make a new market。根据aler的买卖报价，make a new market的范围是（123.35-123.8）也就是best bibest ask，而123.4正好落在这个区间，所以是make a new market. 如题。。。。。。。。。
NO.PZ2015122802000026 老师这个题。是不是如果价格在123.2 就是 make the market， 如果价格正好在best bi或者best ask 就是take the orr
