What Is the Primary Difference Between a Fuel Cell and a Battery

Multiple Choice

What is the primary difference between a fuel cell and a battery?

A) Fuel cells do not run down because they can be refueled; batteries run down and need to be recharged.
B) Batteries can be recharged,fuel cells cannot.
C) Batteries supply electricity; fuel cells supply heat.
D) Fuel cells oxidize to supply electricity,batteries reduce to supply electricity.
E) Fuel cells do not use metals as oxidants and reductants,batteries have a static reservoir of oxidant and reductant.