The moment of inertia of a thin uniform rod of mass $M$ and length $L$ about an axis passing through its midpoint and perpendicular to its length is $I_0$. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is:

1. A
   $I_0+M{L}^2$
2. B
   $I_0+\frac{M{L}^2}{2}$
3. C
   $I_0+\frac{M{L}^2}{4}$
4. D
   $I_0+2M{L}^2$