Which one of the following is the major produ | vedclass

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(D) The reaction involves the treatment of a compound containing both a nitrile $(-CN)$ group and a ketone $(C=O)$ group with $2$ equivalents of $CH_3

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(D) The reaction involves the treatment of a compound containing both a nitrile $(-CN)$ group and a ketone $(C=O)$ group with $2$ equivalents of $CH_3MgBr$. $1$. The $CH_3MgBr$ acts as a nucleophile and attacks both the nitrile carbon and the ketone carbonyl carbon. $2$. Upon acidic workup $(H_3O^+)$,the intermediate imine is hydrolyzed to a ketone,and the alkoxide is protonated to an alcohol. $3$. The final step involves dehydration using $H_2SO_4$ and heat,which removes the hydroxyl group and a hydrogen atom from the adjacent carbon to form a double bond. $4$. The final product is a ketone with a substituted double bond,as shown in the solution image.

Which one of the following is the major product of the given reaction?

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