A tax on a good has a deadweight loss if ( )
A. the reduction in consumer and producer surplus is greater than the tax revenue.
B. the tax revenue is greater than the reduction in consumer and producer surplus.
C. the reduction in consumer surplus is greater than the reduction in producer surplus.
D. the reduction in producer surplus is greater than the reduction in consumer surplus.
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If the production of a good yields a negative externality, then the social-cost curve lies ___________ the supply curve, and the socially optimal quantity is ___________ than the equilibrium quantity. ( )
A. above, greater
B. above, less
C. below, greater
D. below, less
When a monopolistically competitive firm raises its price, quantity demanded falls to zero. ( )
The task of economic regulation is to approximate the results of the competitive market. ( )
Imperfectly competitive firms are characterized by horizontal demand curves. ( )