Propane C3H8(g) can be burned in pure oxygen to give only carbon dixoide and water.?

The answer is E and F because if you properly balnce the equaton it would look like C3H8 +5O2--->3co2+4H20 , so the ratio between propane and water is 1:4 if you look at the coefficients. so if 4 moles are gone : 16 moles are made.