If $\theta$ is the angle between the circles $x^2+y^2-4 x+2 y-4=0$ and $x^2+y^2-2 x+4 y-11=0$, then $\sin \theta=$

• Correct answer
  A

  $\frac{\sqrt{47}}{24}$
• B

  $\frac{23}{25}$
• C

  $\frac{23}{24}$
• D

  $\frac{\sqrt{3}}{5}$

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