Consider the following statements regarding the Air Quality Index (AQI) seen in news everyday:
1. Carbon dioxide, lead and ozone are a few of the pollutants measured to calculate the AQI.
2. Smoke particles from wildfires and airborne dust during dust and sandstorms are included in the measurement of AQI.
3. The higher the number on the AQI, the greater is the health risk to humans.
Which of the above statements is/are correct?1
1 only
2
2 and 3 only
3
1 and 2 only
4
3 only