Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.

CET : ZBQ :: KVO : HSL :: QRS : ?

NOP

CET : ZBQ :: KVO : HSL :: QRS : ?

The logic followed here is :

C → (-3) → Z

E→ (-3) → B

T → (-3) → Q

And

K→ (-3) → H

V → (-3) → S

O → (-3) → L

Similarly

Q → (-3) → N

R → (-3) → O

S → (-3) → P