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.
WINDOW : XFOELX :: TICKET : UFDLBU :: REGION : ?

A

SBHFLO

B

SHFKLO

C

BHFDLO

D

HFSOKL