Which of the Following Is Not a Reason Why So

Which of the following is not a reason why so few women are in political office?

A) Women may be more likely to see themselves as supporters rather than movers and doers.
B) Women are less likely to receive encouragement to run for office from a political source.
C) Women face a lingering sexism that men are better leaders.
D) Women tend to see themselves as overqualified for political office.