The question asks for the major product in a reaction sequence, but the actual reaction scheme and the structures of options A–D are missing from the prompt.

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

What is missing

To solve this, I need:

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

Without these, no chemical analysis can be carried out reliably.

Conclusion

Since the reaction sequence and answer choices are not visible, I cannot independently derive the major product.

Therefore, I cannot verify whether option D is correct based on chemistry reasoning from the provided data.