In which of the following market models do demand and marginal revenue diverge?

A) pure monopoly, oligopoly, and monopolistic competition
B) pure monopoly, oligopoly, and pure competition
C) pure monopoly only
D) oligopoly only

Pure Monopoly

A market structure characterized by a single seller selling a unique product in the market, resulting in significant control over pricing and market supply.

Monopolistic Competition

A market structure where many companies sell products that are similar but not identical, allowing them some power to set prices.

Oligopoly

A distinct form of market where only a few companies have significant influence over industry prices and competition.