Select the option that will fill in the blank and complete the given series.

DXB, GSI, JNP, MIW, _____

PDD

Explanation:

DXB, GSI, JNP, MIW, __

The logic followed here is :

D → (+3) → G → (+3) → J → (+3) → M → (+3) → P

X → (-5) → S → (-5) → N → (-5) → I → (-5) → D

B → (+7) → I → (+7) → P → (+7) → W → (+7) → D

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