$A$ uniform spherical object of mass $M$ and radius $R$ has a moment of inertia $I$. It rolls without slipping down an inclined plane of angle $\theta$. What is its acceleration?

• A
  $\frac{g \sin \theta}{1 + \frac{M R^2}{I}}$
• B
  $\frac{g \sin \theta}{1 + \frac{I}{M R^2}}$
• C
  $\frac{g \sin \theta}{1 + \frac{M R^2}{I}}$
• D
  $\frac{g \sin \theta}{1 - \frac{I}{M R^2}}$