单项选择题
假设A证券的收益率概率分布如下:
A.5.76% B.4.44% C.3.98% D.5.36%
A.0.2% B.0.4% C.0.6% D.0.8%
A.138.59 B.148.59 C.158.59 D.168.59
A.74295 B.79295 C.84295 D.94295
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