What should come in place of the question mark (?) in the given series based on the English alphabetical order?
KIO, LJP, MKQ, NLR, ?

​KIO, LJP, MKQ, NLR, ?

Logic: ​Each letter in the position increases by 1 in each step.

K +1 → L, L +1 → M, M +1 → N, N +1 → O

I +1 → J, J +1 → K, K +1 → L, L +1 → M

O +1 → P, P +1 → Q, Q ​+1 → R, R+1 → S

So, the next cluster is: OMS

Thus, the correct option is: (b)