Research on Possible Hormonal Influences on Aggression Has Indicated That

Research on possible hormonal influences on aggression has indicated that:

A) testosterone levels influence animal aggression but not human aggression.
B) the gender difference in aggression appears early in life and wanes as testosterone levels decline during adulthood.
C) gender differences in aggression are clearly unrelated to hormonal differences.
D) administering testosterone reduces aggression in most animals.