It Is Easier for a Monopolist to Price Discriminate Between

Multiple Choice

It is easier for a monopolist to price discriminate between groups for a service than for a good because

A) it is easier to calculate average willingness to pay for services.
B) it is easier to distinguish between groups of customers for services than customers for goods.
C) it is easier for consumers to resell goods than resell services.
D) customers for goods usually do not differ with respect to their average willingness to pay.