Which of the Following Statements Is True

Which of the following statements is true?

A) There are about as many occupations in which women earn more than men as there are jobs in which men earn more than women.
B) Research shows that men tend to earn more than women, but this is owing to the fact that after a few years on the job, women tend to take time off to have children.
C) The differences between men and women's earnings is explained by the fact that men and women tend to do different types of work.
D) Women who majored in such male-dominated fields as engineering and science tend to earn as much as do men in those fields.
E) None of the above