Identify a counter laim for the following argument.
Driving electric or hybrid cars is the best way to cut down on air pollution
A. Electric and hybrid cars are designed to last for 12 to 15 years
B. The government should fund the building of public transportation system to reduce air pollution
C. Some hybrid car engines produce up to 90 percent fewer harmful emissions than gas-powered car engines
D. Gas-powered cars are the largest private source of air pollution