NO.PZ2023091802000172
问题如下：
Stocks and futures have different risks. Which of the following should be considered the least common when examining the characteristics of stocks, futures contracts and their trading markets?
选项：
A.
The supply of the outstanding shares of the stock is limited.
B.
Futures contracts have the maximum position size.
C.
The period of validity of the stock is fixed.
D.
There is a limit to the price movement of futures contracts.
解释：
老师，“D期货合约的价格波动有上限。
期货合约确实有价格波动限制，这通常被称为每日价格限制，是为了控制市场的极端波动风险。”
这里是指和股市每日涨跌停一个意思吗？就是期货价格有涨停，跌停？
