The question refers to a reaction scheme and options $A, B, C, D$, but in the provided prompt the actual reaction figure and the option structures are missing.

Because of that, the major product $P$ cannot be derived from the visible text alone.

What can be concluded

1. The problem is from Alcohols, Phenols and Ethers.
2. The stored correct answer is given as C.
3. However, without the reaction structure/reagents and the option structures, there is no way to independently verify which product is actually formed.

Therefore

• A step-by-step chemical solution is not possible from the incomplete data.
• The only available answer from the prompt is the stored answer C, but this cannot be chemically justified without the missing reaction image/options.

If you provide the reaction scheme and the structures of options $A$ to $D$, I can solve it fully and verify whether $C$ is indeed correct.