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.

GOOD : CKKZ :: BEST : XAOP :: COOL : ?

YKKH

GOOD : CKKZ :: BEST : XAOP :: COOL : ?

The logic followed here is :

G → (-4) → C

O → (-4) → K

O → (-4) → K

D → (-4) → Z

and

B → (-4) → X

E → (-4) → A

S → (-4) → O

T → (-4) → P

Similarly

C → (-4) → Y

O → (-4) → K

O → (-4) → K

L → (-4) → H