7A is related to 6B in a certain way. In the same way, 5C is related to 4D. To which of the following is 3E related, following the same logic?

Given:
7A is related to 6B
​5C is related to 4D
Then, 3E is related to ?
7A → 6B
Number: 7 → 6 → decreased by 1
Letter: A → B → next letter
5C → 4D
Number: 5 → 4 → decreased by 1
Letter: C → D → next letter
So, the pattern is:
Number decreases by 1
Letter moves to the next alphabet
Apply the same pattern to 3E:
3 → 2
E → F

Correct answer is (B) 2F.​​