Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

LJV, NMR, PPN, RSJ, ?

TVF

Explanation:

LJV, NMR, PPN, RSJ, ?

The logic followed here is :

L → (+2) → N → (+2) → P → (+2) → R → (+2) → T

J → (+3) → M → (+3) → P → (+3) → S → (+3) → V

V → (-4) → R → (-4) → N → (-4) → J → (-4) → F

So, the letter-cluster that replaces the (?) to complete the series is "TVF"