In Adulthood, Testosterone Appears to Have Activating Effects

In adulthood, testosterone appears to have activating effects. Which of the following describes these activating effects?

A) Adults' level of testosterone affects their preference for partners of the same or the other sex.
B) Adults' level of testosterone affects the intensity of sexual desire and the direction of that desire toward partners of the same or the other sex.
C) One's adolescent levels of testosterone affect the probability of developing a homosexual sexual orientation.
D) Adults' level of testosterone affects the intensity of their sexual desire but not the direction of that desire toward partners of the same or the other sex.