The major product (A) of the following reacti | vedclass

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(B) The reaction is an $E2$ elimination of $1-phenyl-2-fluoropropane$ with an alcoholic base $(KOH/EtOH, \Delta)$.Fluorine is a poor leaving group,whi

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$Ph-CH=CH-CH_3$

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(B) The reaction is an $E2$ elimination of $1-phenyl-2-fluoropropane$ with an alcoholic base $(KOH/EtOH, \Delta)$.Fluorine is a poor leaving group,which makes the $C-H$ bond cleavage more significant in the transition state.This leads to the formation of a carbanion-like transition state at the benzylic position.The base abstracts the acidic proton from the benzylic carbon $(Ph-CH_2-)$,leading to the formation of the more stable conjugated alkene,$1-phenylprop-1-ene$ $(Ph-CH=CH-CH_3)$.

The major product $(A)$ of the following reaction is:

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