Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
HCE, MHJ, ?, TOQ, VQS, WRT

Correct option is C

Logic: - We can write difference in sequance in a way – 5, 4, 3, 2, 1
1. First letters (H, M, ?, T, V, W):
· H to M: The position difference between H and M is +5
· M to T: The position difference between M and T is +7
· T to V: The position difference between T and V is +2
· V to W: The position difference between V and W is +1
2. We can write difference in sequance in a way – 5, 4, 3, 2, 1
3. M (13) + 4 = Q.
4. Second letters (C, H, ?, O, Q, R):
· C to H: The position difference is +5
· H to L: The position difference is +4
· L to O: The position difference is +3
· O to Q: The position difference is +2
· Q to R: The position difference is +1
· Similarly, we see a pattern We can write difference in sequance in a way – 5, 4, 3, 2, 1 (4 + 3 = 7)
H (8) + 4 = L.
5. Third letters (E, J, ?, Q, S, T):
· E to J: The position difference is +5
· J to N: The position difference is +4
· N to O: The position difference is +3
· Q to S: The position difference is +2
· S to T: The position difference is +1
· Similarly, we see a pattern We can write difference in sequance in a way – 5, 4, 3, 2, 1 (4 + 3 = 7)
· J (10) + 4 = N.
Thus, the missing letter-cluster is QLN.