Under the Equal Pay Act

Under the Equal Pay Act:

A) an employer cannot discriminate against a minority worker by paying him less than a non-minority worker.
B) an employer cannot discriminate in pay for substantially equal work on the basis of religion, sex, or national origin.
C) a man could be paid more than a woman for the same kind of work if he produced more on a piece-rate basis.
D) All of these are correct.