One Accurate Summary Statement About What We Know About the Evidence

One accurate summary statement about what we know about the evidence on gender and leadership would be:

A) Women are typically perceived as more effective leaders than men as long as they present themselves as stereotypically female.
B) Men have consistently been shown to be more effective leaders than women.
C) Men and women are perceived as more effective as leaders when the approaches they use match their presentation as more "masculine" or "feminine" as perceived by followers.
D) Evidence on gender and leadership has established that there is essentially no difference in how male and female leaders are perceived.