When Marginal Damages for a Pollutant Vary by Region, Time

When marginal damages for a pollutant vary by region, time of day, or season, a uniform standard

A) a uniform standard yields a socially efficient level of pollution
B) individual standards that equate the MAC to each MDC yield a socially efficient level of pollution
C) there is no current regulation approach that will yield a socially efficient level of pollution
D) technology standards yield a social efficient level of pollution