$\lim _{x \rightarrow 0} \frac{1-\cos \left(x^2+\pi(x+2)\right)}{x^2} = $

  • A
    $\frac{\pi}{2}$
  • B
    $\frac{\pi^2}{4}$
  • C
    $\frac{\pi^2}{2}$
  • D
    $\frac{\pi}{4}$

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