The one type of expenditure that we assume can differ from what spenders have planned is

In the above figure, the curve labeled a is the ________ curve and the curve labeled b is the ________ curve

A) marginal cost; marginal benefit B) marginal cost; trade line C) marginal benefit; trade line D) production possibilities frontier; trade line

Price discrimination by a monopolist is less effective if the

A) good can be resold. B) good has no substitutes. C) monopolist can identify buyers by willingness to pay. D) good cannot be resold.