$\int_{-\pi}^\pi \frac{x \sin ^3 x}{4-\cos ^2 x} d x=$
- A$2 \pi(1-\log 3)$
- B$2 \pi\left(1-\frac{3}{4} \log 3\right)$
- C$\pi\left(1-\frac{3}{4} \log 3\right)$
- D$4 \pi(1-\log 3)$
✓ Correct answer: B
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