Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below:

Diesel vehicles release large amounts of oxides of nitrogen and fine particulate matter that harm the lungs.

Statement 1 is correct as diesel combustion is a major urban source of nitrogen oxides and soot particles.

Statement 2 is wrong because diesel engines run on lean mixtures, having a high air to fuel ratio, not rich mixtures.

A rich mixture means excess fuel and little air, which is the opposite of how diesel engines operate.

The high temperature and excess air of diesel combustion is exactly what favours nitrogen oxide formation.

Particulate filters and selective catalytic reduction are fitted to cut these diesel emissions.