But$-2-$ene on reaction with alkaline $KMnO_4$ at elevated temperature followed by acidification will give:

  • A
    One molecule of $CH_3CHO$ and one molecule of $CH_3COOH$
  • B
    $2$ molecules of $CH_3CHO$
  • C
    $2$ molecules of $CH_3COOH$
  • D
    $CH_3-CH(OH)-CH(OH)-CH_3$

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