Which of the following compound is optically active?

  • A

    $\begin{array}{*{20}{c}}
    {C{H_3} - CH - COOH}\\
    {|\,\,\,\,\,\,\,\,\,\,}\\
    {OH\,\,\,\,\,\,\,}
    \end{array}$

  • B
    826-b203
  • C
    826-c203
  • D

    $CH_3-CH=CH-CH_3$

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