All but Which of These Are Ways Schools Are Allowed

All but which of these are ways schools are allowed to offer women and men equal opportunities to participate in athletics?

A) Schools must demonstrate that the percentage of male and female athletes is about the same as the percent of male and female students enrolled in the school.
B) The school has a history and a continuing practice of expanding opportunities for female students.
C) By getting at least fifty percent of the female students enrolled in the school to sign petitions requesting certain types of sport activities.
D) The school is fully and effectively meeting its female students' interest and abilities to participate in sports.