In each question, one sentence is given in which certain words are in bold and numbered from A to E. Below the sentence are given five options with  possible pairs of interchange of those bold words. Choose the pair(s) of words which are needed to be interchanged to make the sentence grammatically correct and meaningful.

Although (A)blatant based on gender is far less (B)discrimination today than it was several decades ago--it is illegal, for instance, to (C)advertise a position specifically for a man or a woman--(D)remnants of traditional gender-role prejudice (E)persist.