Which of the Following Is NOT a Reason for the Earnings

Which of the following is NOT a reason for the earnings gap?

A) Women still work in traditionally low-paying occupations.
B) Men with graduate degrees are more likely than women to gravitate toward higher-paying specialties.
C) Even in similar job areas, men are given higher-paying, more responsible positions.
D) Women aren't physically capable of handling the manual labor required in the high-paying construction jobs held by many men.