How Do Gender and Age Intersect in the Erotic Marketplace

How do gender and age intersect in the erotic marketplace?

A) As women get older,they prefer younger men,just as older men prefer younger women.
B) The average man prefers to date a woman who is younger;the average woman prefers a man her age or slightly older.
C) The average man prefers to date women who are younger,but as they get older,the age gap that men prefer shrinks.
D) Age is conflated with ugliness;this is equally true for men and women,so as they age,their erotic value approaches zero.