Which expression represents the standard enthalpy change of combustion of methane?
- A$\Delta H_f^{\circ}(\text{CH}_4) + \Delta H_f^{\circ}(\text{CO}_2) - 2\Delta H_f^{\circ}(\text{H}_2\text{O})$
- B$\Delta H_f^{\circ}(\text{CO}_2) + 2\Delta H_f^{\circ}(\text{H}_2\text{O}) + \Delta H_f^{\circ}(\text{CH}_4)$
- C$\Delta H_f^{\circ}(\text{CH}_4) + 2\Delta H_f^{\circ}(\text{H}_2\text{O}) - \Delta H_f^{\circ}(\text{CO}_2)$
- D$\Delta H_f^{\circ}(\text{CO}_2) + 2\Delta H_f^{\circ}(\text{H}_2\text{O}) - \Delta H_f^{\circ}(\text{CH}_4)$