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The following are activities that pollute the environment.
(i) Burning charcoal in a closed room.
(ii) Oil spillage from tankers.
(iii) Using diesel as fuel in vehicles.
(iv) Dumping vegetable waste.
Which activities pollute air?
A. (i) and (iv).
B. (ii) and (iv).
C. (ii) and (iii).
D. (i) and (iii).