Consider the following statements.
1. One way the government can induce a monopolist to expand his output is by imposing a price ceiling that make the monopolist lower his price.
2. MC = MR = AC = AR shows the equilibrium position of the competitive firm.
3. One way the government can induce a monopolist to expand his output by imposing a price floor that makes the monopolist raise his price.
4. One way the government can induce a monopolist to expand his output by imposing a specific tax on the monopolist output.
Which of the statement(s) given above is/are correct?