The question refers to "the following reaction" and asks for the major product, but the actual reaction scheme/structures and option drawings are missing from the prompt. The options are listed only as A, B, C, D without any molecular structures.

Because of this, the product cannot be determined from the given text alone.

What is needed

To solve the question, I would need:

1. The substrate/reactant structure
2. The reagents/conditions
3. The structures corresponding to options A, B, C, and D

Without these, no valid chemical analysis of the major product is possible.

Comparison with stored answer

The stored correct answer is B, but since the reaction and options are absent, I cannot independently verify whether B is correct.

So I must disagree with certainty of the stored answer, not because B is necessarily wrong, but because the provided information is insufficient to derive it.