Which of the Following Reasons Most Likely Explains Why There

Which of the following reasons most likely explains why there is little research examining stereotypes of heterosexual women and men?

A) Because heterosexuality is the "normal" sexuality, and its stereotypes mimic those applied to women and men generally.
B) There is widespread bias against heterosexual women and men in academia.
C) Stereotypes toward heterosexuals are obvious and research examining them would not make a substantial scientific contribution.
D) Stereotypes toward heterosexual men and women are weak and inconsistent.