Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

PRM : INL :: AJK : ?

GFW

A   B   C    D   E    F   G    H    I    J    K    L   M

 ↓    ↓    ↓    ↓    ↓     ↓   ↓    ↓     ↓   ↓    ↓    ↓    ↓

 Z   Y    X   W   V    U   T    S    R   Q   P    O   N

26  25  24  23  22  21  20  19  18  17  16  15  14

******************************************

PRM : INL :: AJK : ?

The  logic followed here is :

P → (-4) → L

R → (-4) → N

M → (-4) → I

LNI (WRITTEN IN BACKWARD FORMAT ) = INL

SIMILARLY

A  → (-4) → W

J → (-4) → F

K  → (-4) → G

WFG (WRITTEN IN BACKWARD FORMAT ) = GFW