$\tan \left(\frac{3 \pi}{16}\right)+\cot \left(\frac{3 \pi}{16}\right)=$

  • A
    $2 \sqrt{2}$
  • B
    $2 \sqrt{2+\sqrt{2}}$
  • C
    $2 \sqrt{2-\sqrt{2}}$
  • D
    $2 \sqrt{2}$

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