European cars have traditionally been smaller and more fuel-efficient than their giant American cousins, but current policy explicitly stresses eco-friendliness. For example, recent British legislation has linked taxation to CO2 emissions with the lowest tax rate of 15 percent on the list price reserved for cars emitting less than 165 gms/km and rising by one percent for each 5 gm increase in CO2 levels.A. The British are unconcerned about the environment and rules have to be imposed upon them for maintenance of a clean environmentB. The lesser the list price of a car, the greater is its fuel efficiency and so lesser the tax on itC. The more fuel efficient a vehicle is, the more eco friendly it will beD. Fuel efficiency does not necessarily correlate with eco-friendliness