The question asks for the major products from the following reactions, but the actual reaction scheme/structures are missing from the prompt.

Also, the options are shown only as:

• A:
• B:
• C:
• D:

with no compounds provided.

What this means

To determine the major product in an organic chemistry reaction, I need:

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

Without these, the problem cannot be solved chemically.

Comparison with stored answer

The stored correct answer is B, but since the reaction and option structures are absent, there is no valid way to verify whether B is correct.

Conclusion

Please provide the reaction diagram or list the reactants, reagents, and option structures so I can solve it step-by-step and verify the answer properly.