Ethanol serves as a biofuel. Which equation represents the complete combustion of ethanol?
- A$\text{C}_2\text{H}_5\text{OH} + 3\text{O}_2 \rightarrow 2\text{CO}_2 + 2\text{H}_2\text{O}$
- B$\text{C}_2\text{H}_5\text{OH} + 3\text{O}_2 \rightarrow 2\text{CO}_2 + 3\text{H}_2\text{O}$
- C$2\text{C}_2\text{H}_5\text{OH} + 6\text{O}_2 \rightarrow 4\text{CO}_2 + 4\text{H}_2\text{O}$
- D$2\text{C}_2\text{H}_5\text{OH} + 7\text{O}_2 \rightarrow 4\text{CO}_2 + 6\text{H}_2\text{O}$