$A$ body is rotating about its own axis. Its rotational kinetic energy is $x$ and its angular momentum is $y$. Hence,its moment of inertia about its own axis is:
- A$\frac{x^2}{2y}$
- B$\frac{y^2}{2x}$
- C$\frac{x}{2y}$
- D$\frac{y}{2x}$
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