Coal is regarded as the worst environmental pollutant when burnt because after burning, it releases large amounts of
1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen oxides (NOX)
4. Methane
Which of the above statements are true?1
1 and 4
2
1, 2 and 3
3
1, 3 and 4
4
1, 2, 3 and 4