Identify product $B$ in following reaction.

Identify product $B$ in following reaction.

1. 2-Methylpentan-3-one
2. 4-Hydroxy-4-methylpentan-2-one
3. 4-Methylpent-3en2-one
4. 2-Methylpent-2en-4-one

Asked in: MHT CET 2021 (24 Sep Shift 1)

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