Which of the following, if true, provides the most logical completion of the passage below  Cars fueled by methanol have a much lower level of emissions of pollutants such as carbon monoxide and environmentally harmful hydrocarbons than gasoline-fueled cars do
Methanol fuel does produce somewhat higher formaldehyde emissions than gasoline does
compared to carbon monoxide and some hydrocarbons produced by gasoline-powered cars, formaldehyde pollution is not a serious threat to the environment