2. Monopoly: a. Briefly explain what is meant by the term "barriers to entry" and provide example of each. b. Briefly explain how a natural monopoly arises. c. The following table shows a monopolist's demand curve and cost information for the production of its good. What quantity will it produce? What will its profits be? Quantity Price per Unit Total Cost 10 $10 $20 20 $8 $50 30 $6 $65 40 $4 $90 50 $2 $120 3. Briefly contrast perfect competition and monopoly to explain a monopoly may or may not display productive efficiency. 4. Monopolistic Competition and Oligopoly a. Briefly discuss how differentiated products in a monopolistic competitive framework can arise, b. Briefly describe what an oligopoly is, as well as the circumstances that could allow oligopolists to earn their highest profits. c. Identify and briefly discuss the ways to conceive how advertising works in the framework of monopolistic competition. d. What is a cartel? What examples of a cartel can you think of