$ \int_{0}^{\pi / 4} \log \left(\frac{\sin x+\cos x}{\cos x}\right) d x $

  • A
    $ \frac{\pi}{4} \log 2 $
  • B
    $ \frac{\pi}{2} \log 2 $
  • C
    $ \frac{\pi}{8} \log 2 $
  • D
    $ \log 2 $

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