In which reaction is the final product Ph-C e | vedclass

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(D) All the given reactions result in the formation of phenylacetylene $(Ph-C \equiv CH)$.$(a)$ Geminal dihalide $Ph-C(Br)_2-CH_3$ undergoes double de

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(D) All the given reactions result in the formation of phenylacetylene $(Ph-C \equiv CH)$.$(a)$ Geminal dihalide $Ph-C(Br)_2-CH_3$ undergoes double dehydrohalogenation with $NaNH_2$ to form the alkyne.$(b)$ Styrene $(C_6H_5-CH=CH_2)$ reacts with $Br_2$ to form a vicinal dihalide,which then undergoes double dehydrohalogenation.$(c)$ Acetophenone $(C_6H_5-C(=O)-CH_3)$ reacts with $PCl_5$ to form a geminal dichloride,which then undergoes double dehydrohalogenation.In all cases,$NH_4Cl$ is used for the protonation of the acetylide ion formed.

In which reaction is the final product $Ph-C \equiv CH$?

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