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

  • A
    $\frac{-e^x}{x^2} + c$
  • B
    $\frac{-e^x}{x} + c$
  • C
    $\frac{e^x}{x^2} + c$
  • D
    $\frac{e^x}{x} + c$

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