The increase in food prices around the world at the end of the 2000s decade led several developing countries to impose export tariffs on which of the following exports?

If marginal benefit is equal to marginal cost, then the

A) producer surplus is equal to the consumer surplus. B) sum of producer surplus and consumer surplus is as large as possible. C) sum of producer surplus and consumer surplus equals zero. D) market has squeezed out total surplus so that it equals zero. E) deadweight loss is more than zero but less than its maximum.

When a monopolist practices perfect price discrimination,

a. consumers receive no consumer surplus b. there is allocative inefficiency c. there is a deadweight loss d. profit is lower than for the nondiscriminating monopolist e. total revenue is less than for the nondiscriminating monopolist