Predict the major product P in the following | vedclass

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(A) The reaction of a $\beta$-amino alcohol with $HNO_2$ (nitrous acid) leads to the formation of a diazonium salt,which is unstable and loses $N_2$ g

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(A) The reaction of a $\beta$-amino alcohol with $HNO_2$ (nitrous acid) leads to the formation of a diazonium salt,which is unstable and loses $N_2$ gas to form a carbocation at the carbon atom originally attached to the $-NH_2$ group. This carbocation undergoes a $1,2$-hydride shift to form a more stable carbocation adjacent to the $-OH$ group. The lone pair on the oxygen atom of the $-OH$ group then stabilizes the carbocation by forming a $C=O$ double bond,resulting in the formation of a ketone. Based on the structure provided,the major product is the ketone shown in option $A$.

Predict the major product $P$ in the following reaction.

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In the following sequence of reactions:
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Product $(D)$ would be:

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