Legislation in the Canadian province of Ontario requires of both public and private employers that pay be the same for jobs historically held by women as for jobs requiring comparable skill that are usually held by men.

(A) that pay be the same for jobs historically held by women as for jobs requiring comparable skill that are
(B) that pay for jobs historically held by women should be the same as for a job requiring comparable skills
(C) to pay the same in jobs historically held by women as in jobs of comparable skill that are
(D) to pay the same regardless of whether a job was historically held by women or is one demanding comparable skills
(E) to pay as much for jobs historically held by women as for a job demanding comparable skills


can anyone explain me why D is incorrect?