— This cap            Tina's. I know she has a red cap.

— No, it            be Tina's. I am wearing her cap now. [ ]

A. maybe, may not

B. might be, can't

C. could be, mustn't

D. must be, mustn't

对于集体主义，理解正确的是（）。

A．坚持集体利益至上，一切以集体利益为转移

B．在集体认为必要的情况下，牺牲个人利益应是无条件的

C．集体有责任帮助个人实现个人利益

D．把员工的思想、行动集中起来是集体主义的核心要求