单选题 With respect to the underlying asset, which of the following derivatives provides the lea.st information about price volatility?
A. Call.
B. Put.
C. FRA.

【正确答案】 B
【答案解析】[解析] 价格波动性会改变看涨期权或看跌期权的价值,所以期权价格可以提供更多关于价格波动性的信息,而不是远期利率协议(forward rate agreement,简称FRA)。