The question as provided is incomplete.

1. Missing reaction scheme The prompt says:

   "Amongst the following, the major product of the given chemical reaction is" but the actual chemical reaction image/equation is not visible, and the options A, B, C, D are also blank.

2. Why the answer cannot be derived To determine the major product in an organic chemistry question, I need:

   • the starting compound(s),
   • the reagents/conditions, and
   • the structures of options A–D.

   Without these, no valid mechanistic analysis or option-wise elimination can be performed.

3. About the stored answer The stored correct answer is listed as A, but since the actual reaction and option structures are missing, I cannot independently verify whether A is truly correct.

4. What is needed to solve it properly Please provide either:

   • the reaction image, or
   • the reactant, reagent, and all option structures in text form.

   Then I can solve it step-by-step and verify the correct option rigorously.