为了合成烯烃 [单选题]-|||-A、-|||-CH3CH2CH CH2CH2OH-|||-B、-|||-CH3CH2CH22CHCH3-|||-OH-|||-C、-|||-((C{H)_(3))}_(2)C-C(H)_(2)C(H)_(3)-|||-OH-|||-D、-|||-(CH3)2CHCHCH3-|||-OH

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