$\int \frac{dx}{x^2 + 2x + 2} = $

  • A
    $\sin^{-1}(x + 1) + c$
  • B
    $\sinh^{-1}(x + 1) + c$
  • C
    $\tanh^{-1}(x + 1) + c$
  • D
    $\tan^{-1}(x + 1) + c$

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