A) Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks
B) Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel
C) Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
D) Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles
Correct Answer: C
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