Integral of x f(sin x) using x to pi - x

1. A.
   $\dfrac{\pi}{8}$
2. B.
   $-\dfrac{\pi^2}{8}$
3. C.
   $\dfrac{\pi^2}{4}$
4. D.
   $-\dfrac{\pi^2}{4}$

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

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