Please describe the following questions:
1) Is it false that the defining characteristic of oligopoly is that each firm is mutually interdependent?
2) Is it true that a price discriminating monopolist charges the same price to everyone? (Be sure to point out that a price discriminating monopolist must be the only seller in the market.).
3) Is it false that most consumers would prefer markets that are purely competitive?
4) Is it true that a firm should shut down in the short run if price is less than average fixed costs?