In the following question, select the related letters from the given alternatives.
BO: AM : CP:?

Correct option is D

BO to AM:
The first letter: B (2) to A (1): Decrease by 1.
The second letter: O (15) to M (13): Decrease by 2.
Now applying the same pattern to CP:
The first letter: C (3): Decrease by 1 → B (2).
The second letter: P (16): Decrease by 2 → N (14).
So, CP relates to BN.
Thus, the correct answer is (d) BN.