Select the option which 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.
RED ∶ GHU ∶∶ BLUE ∶ HXOE ∶∶ PINK ∶ ?
1
JHGF
2
MNHO
3
PLOK
4
NQLS