Polarisation of electrons in acroline may be written as

  • A

    $CH_2^{\delta - } = CH - C{H^{\delta + }} = O$

  • B

    $CH_2^{\delta - } = CH - CH = {O^{\delta + }}$

  • C

    $CH_2^{\delta - } = C{H^{\delta + }} - CH = O$

  • D

    $CH_2^{\delta + } = CH - CH = {O^{\delta - }}$

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  • [AIIMS 2006]

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