The question image/reaction scheme and the actual option structures are missing in the provided text. The prompt says:

"Consider the following reactions, The compound [P] is :"

but no reactions or structures for options A, B, C, D are visible. Because of that, it is not possible to derive the identity of compound $[P]$ from the information supplied.

What is needed to solve

To solve this type of organic chemistry question, I would need:

1. The full reaction sequence/reagent list.
2. The starting compound structure.
3. The structures corresponding to options A, B, C, and D.

Without these, any answer would be a guess.

Comparison with stored answer

The stored correct answer is given as B, but since the actual reaction scheme and options are absent, I cannot independently verify whether $B$ is correct.

So I do not have enough information to agree or disagree on chemical grounds.