समाकलन का मान ज्ञात कीजिए: $\int_0^\pi \frac{x}{\sin x}(3 \cos^2 x + 2 \sin x + \sin^3 x - 3) dx$

  • A
    $\frac{\pi(5 \pi-12)}{4}$
  • B
    $\frac{\pi}{2}$
  • C
    $\frac{\pi}{2}(5 \pi-6)$
  • D
    $\frac{\pi(5 \pi-12)}{6}$

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