The two terms on the left side of the symbol are related to each other in a certain way. Similarly, the pair of terms on the right side of the symbol are also related, out of which one term is missing. Find the missing term from the options.
FHKO : UQNL :: BCEH : ?
1
WTRP
2
YURP
3
YVTS
4
YXVS