How Is Gender Relevant to Aggression

How is gender relevant to aggression?

A) Aggression expressed by girls tends to be more spiteful
B) It isn't
C) The factors that predict aggression in boys also predict aggression in girls, though aggression is generally more common in boys than in girls
D) There is a similar level of aggression in boys and girls, but aggression is expressed differently in girls and the causal factors tend to be different as well
E) Boys derive more satisfaction from being aggressive toward girls than to other boys