Which of the following are essential components of industrial smog?
(A) Sulphur Dioxide (SO2)
(B) Particulate matters
(C) Fly ash
(D) Soot
Choose the correct answer from the options given below:
1
(A) and (B) Only
2
(A), (B) and (C) Only
3
(C) and (D) Only
4
(A), (B), (C) and (D)