A downward-sloping demand curve exists for:
A. A monopolist, but not for a perfectly competitive firm.
B. A perfectly competitive firm, but not for a monopolist.
C. Both a monopolist and a perfectly competitive firm.
D. Either a monopolist or a perfectly competitive firm depending on the cost of production.
E. Oligopoly.
A)A monopolist, but not for a perfectly competitive firm.
In monopolistic competition, the demand curve for an individual firm is downward sloping, but in perfect competition, the demand curve for an individual firm is fully elastic.