What should come in place of the question mark (?) in the given series based on theEnglish alphabetical order?

ACK, DFN, GIQ, JLT, ?​​

Given: ACK, DFN, GIQ, JLT, ?​​

Logic: Letters are increasing + 3 place.

A + 3 → D, D + 3 → G, G + 3 → J, J + 3 → M

C + 3 → F, F + 3 → I, I + 3 → L, L + 3 → O

K + 3 → N, N + 3 → Q, Q + 3 → T, T + 3 → W

So, the missing term is MOW.

Thus, correct option is (a).