$\int_{-1}^{3/2} |x \sin \pi x| \, dx =$

  • A
    $\frac{2}{\pi} + \frac{1}{\pi^2}$
  • B
    $\frac{3}{\pi} + \frac{1}{\pi^2}$
  • C
    $\frac{4}{\pi} + \frac{1}{\pi^2}$
  • D
    $\frac{1}{\pi} + \frac{2}{\pi^2}$

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