People Tend to Evaluate Female Leaders Slightly Less Favourably Than

People tend to evaluate female leaders slightly less favourably than male leaders because:

A) women aren't as skilled at leading people.
B) they tend to rely on gender stereotypes and prototypes of leaders.
C) people don't have many examples of women in leadership roles.
D) women tend to use one leadership style whereas effective leaders use many styles.
E) of all of these reasons.