USfederal and State Government Do Not Regulate the Use of the Majority

Multiple Choice

U.S.federal and state government do not regulate the use of the majority of commercial chemicals because

A) of insufficient data due to limitations in toxicity studies as well as the high cost of regulation.
B) scientists regulate themselves and warn people about a chemical's harmful effects.
C) new chemicals are being synthesized faster than they can be thoroughly tested.
D) answers a and b.
E) answers a and c.