The table shows certain properties of four fuels. Which fuel is gaseous at room temperature and produces two products when it burns in an excess supply of air?
- Ahydrogen, $ ext{H}_2$, melting point $-259^{\circ}\text{C}$, boiling point $-253^{\circ}\text{C}$
- Bmethane, $ ext{CH}_4$, melting point $-182^{\circ}\text{C}$, boiling point $-164^{\circ}\text{C}$
- Coctane, $ ext{C}_8\text{H}_{18}$, melting point $-57^{\circ}\text{C}$, boiling point $126^{\circ}\text{C}$
- Dwax, $ ext{C}_{31}\text{H}_{64}$, melting point $60^{\circ}\text{C}$, boiling point $400^{\circ}\text{C}$