Which statement is NOT TRUE?
A) The "Tragedy of the commons" is the idea that whether or not public land is held in common or regulated, there will always be overuse and degradation to the detriment of individuals and society.
B) The precautionary principle states that substances, such as potential toxicants, are assumed to be harmful until shown to be harmless, and is mostly practiced in the United States.
C) NAFTA involves countries set up to promote free trade with the United States are Canada and Mexico.
D) If the environmental laws of any of the participating nations of NAFTA were viewed as a barrier to trade and development, they could be overturned.
