[求助]一道GMATprep语法题

 Many teenagers undergo stress, but results of a recent study indicate that the patterns of stress that girls experience are more likely to result in depression than are those that boys experience.

A are those that boys experience

B what boys experience

C boys’ experience would

D boys’ stress patterns do

E stress patterns of boys

 C 怎么不好了 ？ 为什么选A ？

谢谢！