If $y = \log_{e} x^3 + 3 \sin^{-1} x + k x^2$ and $y'(\frac{1}{2}) = 2 \sqrt{3}$,then $k =$

  • A
    $6$
  • B
    $-6$
  • C
    $2 \sqrt{3}$
  • D
    $1$

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