In the following question, select the related letter/letters from the given alternatives.
STM : RSL :: VSF : ?

Let's analyze the relationship between STM and RSL by looking at the positional values of the letters:
S−1=R

T−1=S

M−1=L

Applying the same pattern (−1,−1,−1) to VSF:

V−1=U

S−1=R

F−1=E

So, VSF becomes URE.