Patricia, Age 10, Refuses to Wear Dresses and Insists on Being

Patricia, age 10, refuses to wear dresses and insists on being called Pat. She knows she is a girl, but she says boys have it better. She prefers playing with boys and only plays the games they play. She says she wants to be a football player and a mother when she grows up. Pat has ________

A) transsexualism.
B) transvestism.
C) gender identity disorder.
D) no disorder.