$\int {\left( {1 + x + \frac{{{x^2}}}{{2!}} + \frac{{{x^3}}}{{3!}} + \dots} \right) dx} = $

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

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