$\int_0^\infty \frac{\log(1 + x^2)}{1 + x^2} \,dx = $

  • A
    $\pi \log \frac{1}{2}$
  • B
    $\pi \log 2$
  • C
    $2\pi \log \frac{1}{2}$
  • D
    $2\pi \log 2$

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