问题如下图：
选项：
A. 
B. 
C. 
解释：
老师，这道题目我可以理解为什么选C。但是我不明白为什么不选择B，B答案说的是交易量下降百分之四十，一般来说损失厌恶会出现过度交易，但是这里是交易量下降。第二个不明白的是，答案的讲解中关于行业集中的问题。是说损失厌恶会导致行业集中嘛？后面一句解释看得也不是很明白，请再次解答一下，谢谢！
NO.PZ201511190100000302问题如下 Whiof Tang’s observations is least likely to the consequenof Jorn monstrating loss-aversion bias?A.Observation 1.B.Observation 2.C.Observation 3.C is correct.Loss aversion itself mcause a sector concentration; however, a market neutrstrategy ten to focus on invistocks without regarto the sector. The sector exposure woulmitigatewith the balancing of the invilong anshort positions.高风险，持有时间很长，unrwater不都是loss aversion的表现吗？
NO.PZ201511190100000302 问题如下 Whiof Tang’s observations is least likely to the consequenof Jorn monstrating loss-aversion bias? A.Observation 1. B.Observation 2. C.Observation 3. C is correct.Loss aversion itself mcause a sector concentration; however, a market neutrstrategy ten to focus on invistocks without regarto the sector. The sector exposure woulmitigatewith the balancing of the invilong anshort positions. Observation 2: The trang volume of the funhcreasemore th40 percent ring the past year.Observation 3: The portfolio is more concentratein a few sectors thin the past.他loss aversion 就将亏损的股票全部持有，好的股票都卖了，trang volume为什么会下降啊？不是应该不变或者上升吗？C亏的都留着在，那就是可能集中在某些行业，因为行业风险的原因一亏都亏，所以更集中C应该是对的的呀 B是错的呀，求解
NO.PZ201511190100000302 问题如下 Whiof Tang’s observations is least likely to the consequenof Jorn monstrating loss-aversion bias? A.Observation 1. B.Observation 2. C.Observation 3. C is correct.Loss aversion itself mcause a sector concentration; however, a market neutrstrategy ten to focus on invistocks without regarto the sector. The sector exposure woulmitigatewith the balancing of the invilong anshort positions. loss-aversion会增加交易量，说交易量会下降，所以不对啊。为什么答案关注点在于long/short策略
NO.PZ201511190100000302 Observation 2. Observation 3. C is correct. Loss aversion itself mcause a sector concentration; however, a market neutrstrategy ten to focus on invistocks without regarto the sector. The sector exposure woulmitigatewith the balancing of the invilong anshort positions. 如果一直存有亏损的头寸也会导致头寸集中吧
NO.PZ201511190100000302 Observation 2. Observation 3. C is correct. Loss aversion itself mcause a sector concentration; however, a market neutrstrategy ten to focus on invistocks without regarto the sector. The sector exposure woulmitigatewith the balancing of the invilong anshort positions. position unr water 是指现在的持仓太少了么
