Select the letter-cluster that can replace the question mark (?) in the given letter-cluster series.

THC, DIU, VJE, FKW, XLG,?

HMY

Explanation:

DIU, VJE, FKW, XLG,?

The logic followed here is :

D → (-8) → V → (+10) → F → (-8) → X → (+10) → H

I → (+1) → J → (+1) → K → (+1) → L → (+1) → M

U → (+10) → E → (+18) → W → (+10) → G → (+18) → Y

So, the letter-cluster that replaces the (?) to complete the series is "HMY"