$\int_{\frac{\pi}{3}}^{\frac{2 \pi}{3}} \frac{x}{1+\sin x} \,d x=$

  • A
    $\pi(\sqrt{3}-2)$
  • B
    $\pi(2-\sqrt{3})$
  • C
    $\pi(\sqrt{3}+2)$
  • D
    $\frac{\pi}{2}(2-\sqrt{3})$

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