What is the difference in how market equilibrium is set in a monopolistic market compared to a competitive market?

A. A monopolist affects equilibrium by deciding how many houses or hotels to build on their properties.

B. A monopolist must negotiate with all of the other suppliers in the market to try to affect the market price

C. A monopolist must set their price high enough to make a profit but low enough to keep federal regulators off their backs.

D. A monopolist's output is the entire market supply curve so the monopolist determines the market price.