What should come in place of the question mark (?) in the given series based on the English alphabetical order?
GEB, IGD, KIF, MKH, ?

GEB, IGD, KIF, MKH, ?

Logic: Each letter getting +2 in alphabetical position.

G + 2 = I, I + 2 = K, K + 2 = M, M + 2 = O
E + 2 = G, G + 2 = I, I + 2 = K, K + 2 = M
B + 2 = D, D + 2 = F, F + 2 = H, H + 2 = J
Missing term = OMJ

​​​Thus, correct option is (a).