Refer to the diagram for a pure monopolist. Monopoly price will be:

Suppose Pat's Paints is a perfectly competitive firm. If Pat's Paints' marginal revenue equals $5 per can, and Pat decides to sell 100 cans of paint, Pat's total revenue equals

A) $5. B) $100. C) $500. D) $20. E) Information on the price of a can of paint is needed to answer the question.

All of the following are problems associated with commodity money EXCEPT

A) it is a cumbersome form of payments system. B) commodities tend to have little value in and of themselves. C) its value is dependent on its purity. D) costs are incurred in certifying the purity and weight of commodity money.