Choose the related letters from the given alternatives.
NPR : GHI :: TVX : ?

Let's analyze the relationship between the first pair: NPR and GHI.
Using positional values of letters (A=1,B=2,…,Z=26):

N=14, P=16, R=18

G=7, H=8, I=9

Notice the mathematical pattern from the first group to the second group:

First letter:
2
14
​
=7→G

Second letter:
2
16
​
=8→H

Third letter:
2
18
​
=9→I

Applying the same division rule (Position÷2) to TVX:

T=20→
2
20
​
=10→J

V=22→
2
22
​
=11→K

X=24→
2
24
​
=12→L

Thus, TVX relates to JKL.