When Comparing Male-Dominated and Female-Dominated Positions in the Same Fields

When comparing male-dominated and female-dominated positions in the same fields,

A) those positions often require similar skills, interests, abilities, and work time commitments.
B) no laws, but culture and society often prevent men from entering the female-dominated fields.
C) because they are off in the summer, elementary school teachers spend considerably less time teaching than university professors.
D) All of the above.
E) A and B only above.