Research into Male Hormones Indicates That

Research into male hormones indicates that

A) Men who act aggressively and commit antisocial and criminal acts tend to be at the peak of their testosterone cycle.
B) Testosterone contributes to the development of men's greater muscle mass.
C) Men who are given estrogen experience an increase in nonverbal skills and a decline in spatial skills.
D) Starting at age 30, men's testosterone levels begin to decrease.
E) All of the above