He doesn't think the question of ______ they are boys or girls is important .[ ]

A. if

B. whether

C. which

D. that

下列有关异性装扮症的叙述不正确的是（）

A.穿戴异性服饰并引起性兴奋

B.对自身性别的认同并无障碍

C.当异装行为受抑制时，可引起明显不安情绪

D.穿戴异性服装来吸引同性

E.至少要持续半年