In the following question, select the related letter pair from the given alternatives.
TIR : VKT :: ?

TIR : VKT ==> T+2 I+2 R+2 ==> VKT

Option (a) RAP : TCS ==> R+2 A+2 P+2 ==> TCR

The given logic is not applicable in the last letter.

Option (b) GAR : IYT ==> G+2 A+2 R+2 ==> ICT

The given logic is not applicable in the second letter.

Option (c) GEM : IGO ==> G+2 E+2 M+2 ==> IGO

The given logic is applicable here. So this will be the correct answer.

Option (d) LOD : NMF ==> L+2 O+2 D+2 ==> NQF

The given logic is not applicable in the second letter.