If $\sin \left(\frac{\pi}{4} \cot \theta\right) = \cos \left(\frac{\pi}{4} \tan \theta\right)$,then the general solution of $\theta$ is

  • A
    $n \pi + \frac{\pi}{4}, \quad n \in \mathbb{Z}$
  • B
    $n \pi + (-1)^{n} \frac{\pi}{6}, \quad n \in \mathbb{Z}$
  • C
    $2n \pi \pm \frac{\pi}{4}, \quad n \in \mathbb{Z}$
  • D
    $2n \pi \pm \frac{3\pi}{4}, \quad n \in \mathbb{Z}$

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