$\int \left( \frac{1-\log x}{1+(\log x)^2} \right)^2 dx = $

  • A
    $\frac{1}{1+(\log x)^2}+c$
  • B
    $\frac{\log x}{1+(\log x)^2}+c$
  • C
    $\frac{x}{1+(\log x)^2}+c$
  • D
    $\frac{x^2}{1+(\log x)^2}+c$

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