The complete combustion of a gaseous organic compound in excess oxygen produces 120 cm3 of carbon dioxide and 150 cm3 of water vapour, with both product volumes measured under the same conditions of temperature and pressure.
Which molecular formula could represent this organic compound?
C2H6O\text{C}_2\text{H}_6\text{O}C2H6O
C3H8O\text{C}_3\text{H}_8\text{O}C3H8O
C4H10O\text{C}_4\text{H}_{10}\text{O}C4H10O
C5H12\text{C}_5\text{H}_{12}C5H12