Which of the following pollutants are considered for Air Quality Index in India?

Which of the following pollutants are considered for Air Quality Index in India?

1. Carbon Dioxide
2. Nitrogen Dioxide
3. Sulphur Dioxide
4. Carbon Monoxide
5. Ozone
6. Ammonia
7. Lead

Which of the above statement(s) is/are correct?

A) Only 1, 2, 3, 4, 6

B) Only 1, 2, 3, 4, 7

C) Only 2, 3, 4, 5, 6, 7

D) All of the above

The Correct answer is Only 1, 2, 3, 4, 7