With Regard to the Activational Effects of Sex Hormones in Men

With regard to the activational effects of sex hormones in men and women, it has been found that:

A) androgens serve to sexually excite both men and women.
B) estrogens serve to sexually excite both men and women.
C) androgens serve to sexually excite men and estrogens serve to sexually excite women.
D) androgens and estrogens are both responsible for sexual excitation in men and women.