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

So, there is not enough chemical information to determine the product.

What is missing

To solve an organic chemistry product-formation question, I need:

1. The starting compound/substrate
2. The reagent(s) and conditions
3. The structures of options A, B, C, and D

Without these, the major product cannot be derived.

Conclusion

Since the reaction image or text is absent, I cannot legitimately verify whether option C is correct.

Please provide the reaction diagram (or type out the substrate, reagents, and option structures), and I will solve it step-by-step and compare it with the stored answer.