Read the claim.

Electric cars are an effective approach to combating air pollution.

Which statement would be the best counterclaim for this claim?

Exhaust pipes are not found on electric cars, leading to reduced air emissions.
Instead of focusing on driving cars, people should focus on building mass-transit systems.
Electric vehicles are powered by connecting to the electric grid, and electricity can easily be produced.
Fuel companies will feel a negative impact in sales, and they will try to convince people not to purchase electric cars.