Offset requirements refer to the requirements that:
A.	gasoline stations in non-attainment carbon monoxide zones must offset pollutants by using oxygenated gasoline.
B.	areas that have not attained ozone and carbon monoxide standards can permit new pollution sources only by reducing pollutants from existing sources.
C.	areas that have not attained ozone and carbon monoxide standards must offset pollutants by using state-of-the-art technologies for new emissions sources.
D.	the Environmental Protection Agency set national ambient air quality standards (NAAQSs) in order to offset pollutants.
Answer:B
Offset requirements refer to the requirements that:
A.	gasoline stations in non-attainment carbon monoxide zones must offset pollutants by using oxygenated gasoline. B.	areas that have not attained ozone and carbon monoxide standards can permit new pollution sources only by reducing pollutants from existing sources. C.	areas that have not attained ozone and carbon monoxide standards must offset pollutants by using state-of-the-art technologies for new emissions sources. D.	the Environmental Protection Agency set national ambient air quality standards (NAAQSs) in order to offset pollutants.