$10\,\text{cm}^3$ of ethane is reacted with $45\,\text{cm}^3$ of oxygen when the pressure is $101\,\text{kPa}$ and the temperature is $200\,^{\circ}\text{C}$. The combustion is complete. What total volume of gas is present once the reaction has finished, under the same conditions?
- A$30\,\text{cm}^3$
- B$50\,\text{cm}^3$
- C$55\,\text{cm}^3$
- D$60\,\text{cm}^3$