Which of the Following Is a True Statement About Cost-Benefit

Which of the following is a true statement about cost-benefit analysis?
1) helps decision makers formulate environmental legislation.
2) balances estimated costs with potential environmental benefits.
3) is never used in issues involving human health and safety.
4) is really only applicable in the field of economics.

A) 1
B) 2
C) 3
D) 4
E) 1 and 2