Question 6 (1 point) Mechanic A states that hydrocarbons are the unburnt fuel coming from an engine . Mechanic B states that particulates are also a pollutant. Which mechanic is correct? Mechanic A Mechanic B Both Mechanics A and B Neither Mechanics A nor B

Both Mechanics A and B are correct.<br /><br />Hydrocarbons are indeed unburnt fuel molecules (made of hydrogen and carbon) that exit the engine through the exhaust. Particulates (also known as particulate matter or PM) are also a pollutant. They are tiny particles of soot and other substances that are also released in exhaust gases.<br />