In which of the following cases, the centre of the mass of a rod is certainly not at its centre.

A cylinder rolls without slipping over a horizontal plane with constant velocity. The radius of the cylinder is equal to $r$. At this moment

A ball moves over a fixed track as shown in the figure. From $A \text{to} B$ the ball rolls without slipping. If surface $BC$ is frictionless and $K_A, K_B \text{and} K_C$ are kinetic energies of the ball at $A, B \text{and} C$, respectively, then

The moment of inertia of a thin uniform square plate $ABCD$ of uniform thickness about an axis passing through the centre $O$ and perpendicular to the plate is

where $I_1$, $I_2$, $I_3$ and $I_4$ are, respectively, the moments of inertia about axes $1$, $2$, $3$ and $4$ which are in the plane of the plate.