Which equation gives the overall reaction that produces electricity in a hydrogen-oxygen fuel cell?
- A$\text{H}_2 + \text{O}_2 \rightarrow \text{H}_2\text{O}_2$
- B$2\text{H}_2\text{O} \rightarrow 2\text{H}_2 + \text{O}_2$
- C$2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$
- D$2\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_2$