The question refers to "the following reaction" and asks for the major product, but the reaction scheme and the option structures are missing. The options are listed only as:

• A:
• B:
• C:
• D:

with no chemical structures shown.

Because of this, the product cannot be determined from the provided information.

Step-by-step analysis

1. To solve a product-based organic chemistry MCQ, we need:

   • the starting compound,
   • the reagent(s)/conditions, and
   • the structures of options A, B, C, D.

2. In the current prompt, none of these are visible.

3. Therefore, it is not possible to derive the major product chemically from the given data.

Comparison with stored answer

The stored correct answer is D, but since the actual reaction and option structures are absent, I cannot verify whether D is correct.

Please provide the reaction image or write the substrate, reagents, and option structures explicitly so I can solve it properly.