Stereochemistry of the product is

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(B) The given reactant is an allylic alcohol. Upon treatment with $H^+$ and heat,it undergoes dehydration to form an allene derivative. The resulting

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Racemic mixture

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(B) The given reactant is an allylic alcohol. Upon treatment with $H^+$ and heat,it undergoes dehydration to form an allene derivative. The resulting allene has two chiral centers (or rather,axial chirality due to the allene structure). Since the starting material is not specified as a single enantiomer,the reaction produces a mixture of both enantiomers of the allene,which is a racemic mixture.

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