Regarding Differences in the Performances of Males and Females, Which

Regarding differences in the performances of males and females, which of the following statements is/are TRUE?

A) The differences that do exist between women and men are based on averages.
B) Scores for women and men overlap so much that it is impossible to predict if any one person will be good or bad at math or language simply by knowing their gender.
C) Most male-female performance gaps can be traced to social differences in the power and opportunities given to men and women.
D) All of these statements are true.