Propanone has the molecular formula $\text{C}_3\text{H}_6\text{O}$. The enthalpy change of combustion of hydrogen is $-286\ \text{kJ mol}^{-1}$. The enthalpy change of combustion of carbon is $-394\ \text{kJ mol}^{-1}$. The enthalpy change of combustion of propanone is $-1786\ \text{kJ mol}^{-1}$. From this data, determine the enthalpy change of formation of propanone?
- A$-1106\ \text{kJ mol}^{-1}$
- B$-540\ \text{kJ mol}^{-1}$
- C$-254\ \text{kJ mol}^{-1}$
- D$+1106\ \text{kJ mol}^{-1}$