5. Consider the following statements: (I) In a Cournot model with N identical firms and constant marginal costs, the deadweight loss increases with N. (II) In repeated games, a discount factor δ close to 1 may represent a high likelihood of interacting with the same agent again, or a very low interest rate. (III) In a Bertrand model with two identical firms and constant marginal costs, there is deadweight loss, but less so than in a monopoly. (a) No statement is correct. (b) Only I is correct. (c) Only II is correct. (d) Only III is correct. (e) More than one statement is correct.