When Energy Is Used by a System, Can It Be

Multiple Choice

When energy is used by a system, can it be "used up"?

A) Yes, it is used up when the energy source is depleted.
B) Yes, it is used up when all energy is converted into chemical energy.
C) No, all energy is converted into potential energy.
D) No, all energy is converted into kinetic energy.
E) No, energy can be converted into kinetic and potential energy.