Find the missing group of alphabets in the following series.
WC, CW, (…) , MM, RH

Correct option is D

Given  WC, CW, (…) , MM, RH

First letter of each term = W + 6 = C, C + 5 = H, H + 5 = M, M + 5 = R

second letter of each term = C - 6 = W, W - 5 = R, R - 5 = M, M - 5 = H

missing term ? = HR