The question statement says “The major product of the following reaction is”, but the actual reaction scheme/image is missing, and the structures for options A, B, C, and D are also not provided.

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

What is needed to solve it

To identify the major product in an organic chemistry MCQ, I would need:

1. The starting reactant structure
2. The reagents/conditions
3. The structures of options A, B, C, and D

Without these, there is no chemical basis to evaluate the options.

Comparison with stored answer

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

So I must disagree with the stored answer for now, not because B is definitely wrong, but because the problem data is incomplete.