What should come in place of the question mark (?) in the given series based on the English alphabetical order?
EFL, IJP, MNT, QRX, ?

Given: EFL, IJP, MNT, QRX, ?

Logic: Each letter increased by +4 places in English alphabet.

First letters:
E + 4 = I; I + 4 = M; M + 4 = Q; Q + 4 = U
Second letters:
F + 4 = J; J + 4 = N; N + 4 = R; R + 4 = V
Third letters:
L + 4 = P; P + 4 = T; T + 4 = X; X + 4 = B 
Next term = UVB
Thus, the correct option is (a) UVB.​​