以下属于正确对待社会流行的有[ ]

A．剪与李宇春一样的发型

B．崇拜费俊龙，学好文化

C．穿戴周笔畅的服饰

D．尝试新鲜的食品

The old lady’s hand shook frequently. She explained to her doctor _______this shaking had began half a year before, and ______, only because of this, she had to give up her job.

A．when; how

B．how; when

C．how; how

D．why; why