Why Do Men Usually Make More Money Than Women

Why do men usually make more money than women?

A) Men are naturally predisposed to competition.
B) Men tend to have higher levels of testosterone, which gives them an edge in the business world.
C) Employers understand that men are usually their families' breadwinners.
D) Men are more likely than women to spend their family's money.
E) The values and norms of contemporary society encourage men to make more money.