What Does Research Indicate Regarding the Role of Gender Differences

What does research indicate regarding the role of gender differences in prosocial behaviour?

A) females are more helpful than males
B) gender is unrelated to helping
C) generally, males are more helpful than females, although there is a great deal of inconsistency in this regard from one study to another
D) on the whole, females are more helpful than males, although there is a great deal of inconsistency from study to study
E) males are less likely than females to help strangers