Select the related alphabet from the given alternatives: KJL : ONP :  : CBD : ?

ORV BCF OTM GFH

GFH

Note: +4 rule is followed K→(+4)→ O J→(+4)→ N L→(+4)→ P SIMILARLY C→(+4)→ G B→(+4)→ F D→(+4)→ H