Fred Confronted His Son About the Possibility He Has Developed

Fred confronted his son about the possibility he has developed anorexia nervosa. His son laughs and says, "That's a girl thing." Fred replies that

A) it develops in boys more often than girls.
B) it develops in boys who aren't motivated to meet high expectations.
C) boys can show the same symptoms.
D) boys can have it but the symptoms are different.