$\int_0^\pi x \cdot \sin ^5 x \cdot \cos ^6 x d x=$

• A

  $\frac{16 \pi}{693}$
• Correct answer
  B

  $\frac{8 \pi}{693}$
• C

  $\frac{4 \pi}{693}$
• D

  $\frac{2 \pi}{693}$

Hence, the correct answer is option: 'B'.