Which of the following are two common types of oligopoly market structures?

• A. Monopoly and duopoly
• B. Natural monopoly and price discrimination
• C. Collusive oligopoly and non-collusive oligopoly
• D. Perfect competition and monopolistic competition

Answer: (C)

Verified step by step guidance

1. Understand that an oligopoly is a market structure characterized by a small number of firms whose decisions affect each other.
2. Recognize that within oligopolies, firms can either cooperate (collude) or compete independently, leading to two common types: collusive oligopoly and non-collusive oligopoly.
3. Recall that a collusive oligopoly involves firms working together to set prices or output to maximize joint profits, often forming cartels.
4. Know that a non-collusive oligopoly involves firms acting independently without formal agreements, leading to strategic behavior and competition.
5. Identify that other options like monopoly, duopoly, natural monopoly, price discrimination, perfect competition, and monopolistic competition are different market structures or concepts, not types of oligopoly.