The question image/structures are missing, and all four options are blank. Since the reaction scheme is not visible, the major product cannot actually be derived from the provided text alone.

What is needed

To solve an organic chemistry product question, I need:

1. The starting substrate structure
2. The reagents/conditions
3. The product options A, B, C, D

Without these, no chemical analysis of mechanism or product formation is possible.

Comparison with stored answer

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

So, I do not have enough information to confirm the stored answer.