One Reason Suggested for Why a Boy Can Have Normal

One reason suggested for why a boy can have normal, functioning male sex organs but still believe he should be a girl is that ______.

A) testosterone always triggers female patterns of behavior
B) the genitals and brain develop at different times
C) estrogen plays a key role in both male and female development
D) being a girl is more socially acceptable for boys than being a boy is for girls