The Cornerstone of U

The cornerstone of U.S.environmental regulation of exports is the concept of:

A) receiving the prior informed consent of the foreign countries to which the exports are going.
B) U.S. firms may not export any hazardous materials that they could not sell in the United States.
C) advance permission to export from the Environmental Protection Agency.
D) receiving advance permission from the United Nations before exporting hazardous or toxic materials.