In 2004, Atrazine was banned in the European Union because its manufacturer could not prove that levels found in drinking water were safe. European policy usually follows the "precautionary principle," which means the safety of new chemicals must be proven before they enter the market. In the U.S. ______.
A. chemical manufacturers must follow the same safety standards as in Europe and other developed nations.
B. the EPA must pay for testing on all chemicals and show that they are completely safe before they can be sold in the US.
C. chemical companies perform tests, and marketing is allowed by the EPA unless significant risks are proven.
D. academic researchers conduct studies and inform the EPA which chemicals are safe and which are dangerous.
E. all of the above.