A firm can sell as much as it wants at a constant price. Demand is thus:

The above figure shows the marginal social benefit and marginal social cost curves of coffee in the nation of Kaffenia. When marginal social benefit is equal to the marginal social cost of coffee in Kaffenia

A) three hundred pounds per day will be produced and consumed. B) the efficient quantity of coffee is being produced and consumed. C) any decrease in coffee consumption or production would result in a deadweight loss. D) All of the above are correct.

The above figure shows three different supply-and-demand graphs. Which graph best represents the market for workers at your nearest fast-food restaurant?

A) Graph A B) Graph B C) Graph C D) None of the above.