Select the option in which the pair of letter-clusters share the same relationship as that shared by the given pair of letter-clusters.

CRO : FUR :: ?

TCS : WFV

Pattern followed is :

CRO : FUR

C(3) + 3 = (6)F , R(18) + 3 = 21(U) , O(15) + 3 = 18(R)

Similarly ,

TCS : WFV

T(20) + 3 = 23 (W) , C(3) + 3 = 6(F) , S(19) + 3 = 22(V)

(satisfied)

Hence , TCS : WFV is correct answer .