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.

JLT : QPG :: SGB : ?

HKY

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

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

JLT : QPG :: SGB : ?

The  logic followed here is :

J → (OPPOSITE)→ Q

L → (+4)→ P

T → (OPPOSITE) → G

SIMILARLY

S → (OPPOSITE)→ H

G → (+4)→ K

B → (OPPOSITE) → Y