One Difference Between the Men's Movement and the Women's Movement

One difference between the men's movement and the women's movement is that

A) women's groups are feminist in orientation, whereas men's groups are anti-feminist.
B) men's groups concentrate on establishing masculinity through physical fitness.
C) men's groups have not yet gained the political power that women's groups have.
D) more men belong to men's groups than women belong to women's groups.