Explanation Pattern from BDMP → CEOR:
B (2) → C (3) = +1
D (4) → E (5) = +1
M (13) → O (15) = +2
P (16) → R (18) = +2 Pattern: first two letters +1, next two letters +2 Apply to GHIL:
G (7) → 8 → H
H (8) → 9 → I
I (9) → 11 → K
L (12) → 14 → N
Code = HIKN
Hence, option a is correct
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