These diagrams show a spring toy on a set of steps. In Diagram 1, the toy is at rest. In Diagram 2, the toy has begun to move down the steps.
Diagram 1
Diagram 2
Which choice describes the energy the spring toy has in Diagram 1?
A: a combination of potential energy, kinetic energy, and mechanical energy
B: all kinetic energy
C: all mechanical energy
D: all potential energy