According to the Androgen Theory, the Likelihood of a Male

According to the androgen theory, the likelihood of a male being gay is increased as the number of his older brothers increases because

A) as the number of male offspring increases, the fetus's immune system creates antibodies that increase the influence of estrogen.
B) as the number of male offspring increases, the mother's body responds to male androgens with antibodies that cross the placental barrier.
C) the mother's immune system is compromised and unable to develop antibodies to curb the influence of androgens.
D) the fetus is unable to produce enough androgen to affect fetal masculinization.