Why didn't you tell me there was no meeting today? I______ all the way here through the heavy snow.

A．needn't have driven

B．can't have driven

C．mustn't have driven

D．shouldn't have driven

银行挂出的美元对人民币的即期汇率是USD1=CNY7.5865，3个月远期汇率是USD1=CNY7.4992。这表明人民币远期（）。

A.升水

B.贴水

C.升值

D.贬值