Asteroids X,Y and Z orbit around a Planet?

Asteroids X, Y, and Z have equal mass of 3.0 kg each. They orbit around a planet with M=3.20E+24 kg. The orbits are in the plane of the paper and are drawn to scale.

In the statements below, TE is the total mechanical energy, KE is the kinetic energy, and PE is the potential energy.

The PE of X at u is .... the PE of Y at m

The PE of Y at u is .... the PE of X at u

The KE of Z at r is .... that at m

The TE of Y is .... the TE of X

The PE of X at r is .... the PE of Z at m

The PE of Y at c is .... that at u

The speed of X at u is .... that at r

The TE of Z is .... the TE of Y

The answers are either "less than" or "greater than" or "equal to"

Please help!