The question refers to "the above reaction", but the actual reaction scheme and the structures of options A, B, C, D are not visible in the provided prompt.

So, the essential chemical information needed to solve the problem is missing. Without:

1. the reaction substrate/reactants,
2. the reagents/conditions, and
3. the structures of options A–D,

it is not possible to determine the major product rigorously.

What can be concluded?

The only available extra information is the stored correct answer: B. However, since the reaction itself is absent, I cannot independently derive and verify that answer from chemistry principles.

Required information to solve properly

Please provide either:

• the reaction image/scheme, or
• the full text of reactants, reagents, and options.

Then I can solve it step-by-step and verify whether option B is indeed correct.