What should come in place of ? in the given series based on the English alphabetical order?
YIQ, AKR, CMS, EOT, ?

Given:

YIQ, AKR, CMS, EOT, ?

Logic: 1st + 2, 2nd +2 and 3rd +1

Y + 2 = A, A + 2= C, C + 2 = E, E + 2 = G

I + 2 = K, K + 2 = M, M + 2 = O, O + 2 = Q
Q + 1 = R, R + 1 = S, S + 1 = T, T + 1 = U

GQU is the answer.

Correct answer is (b) GQU.