For Krugman's model of intra-industry trade under monopolistic competition: A. Illustrate and explain how the monopolistically competitive equilibrium in autarky may be depicted using the basic Krugman diagram with the PP and CC curves. {A suggested structure is as follows Discuss assumptions. Discuss the behaviour of rms under the monopolistic competition model and the economic intuition behind the CC curve 's equation. You do not need to derive the curve, but you should know the functional relationship. Briefly discuss the economic intuition behind the PP curve 's equation. Again, you don 't need to derive this curve, but you should know the equation. Using a graph, discuss how equilibrium is attained in this model. } [10 marks] B. Illustrate and explain the impact of the opening of trade using this diagram. [10 marks] C. Explain the gains from trade (welfare implications) in this framework. [3 marks]