$\mathop {{\rm{lim}}}\limits_{x \to 0} \frac{{\left( {1 - \cos 2x} \right)\left( {3 + \cos x} \right)}}{{x\tan 4x}} = $

  • A
    $ - \frac{1}{4}$
  • B
    $\frac{1}{2}$
  • C
    $1$
  • D
    $2$

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