The EPA Is Authorized by the Toxic Substances Control Act

The EPA is authorized by the Toxic Substances Control Act (TSCA) to test the safety of chemicals used in bulk in the manufacturing of products.When passed,these regulations required the testing of existing and new chemicals when there are indications of potential risks.Since TSCA was passed,the EPA has

A) reversed this guideline,requiring the testing only for substances that are known carcinogens.
B) tested and banned more than 300 new and existing substances.
C) tested the safety of about half of the 80,000 chemical substances in the inventory.
D) tested the safety of less than 1% of the chemical substances in the inventory.