Economic Models Reveal That the Command and Control Policies Such

Economic models reveal that the command and control policies such as technology-based effluent standards used to control air pollution are

A) six times less costly than other policies that are designed to be cost effective.
B) six times more costly than other policies that are designed to be cost effective.
C) six times less effective than other policies that are designed to be more stringent.
D) six times more effective than other policies that are designed to be more stringent.