Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::?
# : AIP :: MRV : %

​# : AIP :: MRV : %

Logic: Leter+4, +3, +2 in alphabetical position.

​# : AIP 

W +4 → A

F +3 → I

N + 2 → P

Similarly,

MRV : %

M +4 → Q

R +3 → U

V  + 2 → X

So, # = WFN, % = QUX follow.

Thus, the correct option is: (b)