If $x = \log \left[ \cot \left( \frac{\pi}{4} + \theta \right) \right]$, then the value of $\sinh x$ is

  • A
    $\tan 2\theta$
  • B
    $-\tan 2\theta$
  • C
    $\cot 2\theta$
  • D
    $-\cot 2\theta$

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