Assume the price of a tradable emissions permit for a ton of sulfur dioxide is $150. Which of the following is incorrect?
1) The price of a tradable emissions permit for a ton of sulfur dioxide is $150.
2) The price of a tradable emissions permit for a ton of sulfur dioxide is $200.
3) The price of a tradable emissions permit for a ton of sulfur dioxide is $100.
4) The price of a tradable emissions permit for a ton of sulfur dioxide is $250.
