यदि $\int_{0}^{\pi} \log (\sin x) dx = 8 k$ है,तो $\int_{0}^{\pi / 4} \log (1 + \tan x) dx =$

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

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