The given figure shows a disc of mass $M$ and radius $R$ lying in the $x-y$ plane with its center on the $x$-axis at a distance $a$ from the origin. Then,the moment of inertia of the disc about the $x$-axis is:

  • A
    $M\left( \frac{R^2}{2} \right)$
  • B
    $M\left( \frac{R^2}{4} \right)$
  • C
    $M\left( \frac{R^2}{4} + a^2 \right)$
  • D
    $M\left( \frac{R^2}{2} + a^2 \right)$

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