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 :: ?
# : OIP :: MGN : %

Information Given:
Pattern: # : OIP :: MGN : %
Options give values for # and %.

Logic: Each letter increases by +4 positions.

Step-by-step:​
For # → OIP

Test option A:
KEL → OIP
K → O (+4)
E → I (+4)
L → P (+4) ✔

Now apply same rule to MGN:
M → Q (+4)
G → K (+4)
N → R (+4)

Final Answer:

Final Correct Option:
A