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股票的当前价格为40美元,假定其收益率期望为15%,波动率为25%。在两年内的股票收益率(连续复利)的概率分布……

股票的当前价格为40美元,假定其收益率期望为15%,波动率为25%。在两年内的股票收益率(连续复利)的概率分布是()。

A.N (0.11875,0.03235)
B.N (0.11975,0.03125)
C.N (0.11875,0.03125)
D.N (0.11875,0.08125)
E.N (0.11875,0.13125)