The question refers to “the following reaction,” but the actual reaction scheme/image is missing from the prompt. Also, options A, B, and C are blank, while only option D is visible:

$\mathrm{CH_3CH=CH-CH_2NH_2}$

Because the substrate/reagents are not provided, the major product cannot be derived rigorously from the given information alone.

What can be concluded from the available data

1. The stored correct answer is given as B.
2. Since option B itself is not shown, I cannot independently verify its structure.
3. Option D is an allylamine-type product: $\mathrm{CH_3CH=CH-CH_2NH_2}$ but there is no reaction context to decide whether this is correct or not.

Therefore

• A proper step-by-step organic mechanism cannot be written without the missing reaction scheme.
• The only defensible comparison possible is with the stored answer key.

So, based strictly on the provided record, the answer is B, but this is not independently verifiable from the incomplete question statement.