According to the available data, quantum of pollution caused by various categories of vehicles on the road of certain city reveals that the private four wheeler vehicles cause the maximum pollution, this is followed by the pollution caused by the buses, the trucks and finally the two wheelers. (a) The number of two wheelers is less than the number of four wheelers plying on the city roads. (b) Pollution caused by a single private vehicle would be more than the pollution caused by any single bus.

Correct answer: D