What is the largest category in state government spending?

One common effect of rent ceilings in big cities is

A) that landlords build more apartments. B) that landlords charge "key money," high payments charged to new tenants for new locks and keys. C) to equalize the quantity of apartments demanded and the quantity supplied in neighborhoods. D) to reduce the search activity by those seeking shelter.

A market with a single seller is called

A) perfectly competitive. B) monopolistically competitive. C) a monopoly. D) an oligopoly.