The theoretical air–fuel ratio mixture for a gasoline fueled engine, for complete gasoline fuel combustion, the stoichiometric air-fuel ratio is about 14.8:1. In order to completely burn 1 kg of gasoline fuel, the combustion process needs 14.8 kg of air. The stoichiometric mixture for a gasoline engine is the ideal ratio of air to fuel that burns all fuel with no excess air.

Hence, the correct option is (D).