The question refers to “the following reaction” and lists options A–D, but the actual reaction scheme and option structures are missing in the provided prompt.

Because of that, the major product cannot be determined from the available information.

What is missing

To solve this organic chemistry question, I would need:

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

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

Conclusion

Since the reaction image/structures are absent, I cannot independently derive the major product.

The stored correct answer is given as D, but there is not enough information to verify whether that is correct.