The equation for the combustion of propane in air is given below. $\text{C}_3\text{H}_8(\text{g}) + x\text{O}_2(\text{g}) \rightarrow 3\text{CO}_2(\text{g}) + y\text{H}_2\text{O}(\text{g})$. What values of $x$ and $y$ make the equation balanced?
- A$x=3,\; y=4$
- B$x=4,\; y=8$
- C$x=5,\; y=4$
- D$x=10,\; y=8$