The question refers to “the following reaction”, but the actual reaction scheme/structure is missing from the prompt. Also, the options A, B, C, D are blank, so there is no chemical information to evaluate.

Because of that, the major product cannot be determined from the given data.

What is needed to solve it

To identify the major product, I would need:

1. The substrate/reactant structure
2. The reagents/conditions
3. The product options A–D

Without these, no valid organic chemistry analysis can be performed.

Comparison with stored answer

The stored correct answer is given as C, but since the reaction and options are not visible, I cannot independently verify whether C is correct.

So, I must disagree with the stored answer for now, not because it is necessarily wrong, but because the necessary information is absent.