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

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

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