There are two countries, Blue and Red. Both of them produce cheese and tomatoes. Consider the no-trade input/output situation presented in the following table regarding two countries. INPUT/OUTPUT WITHOUT TRADE Country Blue Red Total I. Units of Input Cheese 100 50 Tomatoes 60 30 II. Output per Unit of Input (kg) Cheese 10 Tomatoes 50 20 III. Total Output (kg) Cheese 1.000 250 1.250 Tomatoes 3,000 600 3.600 IV. Consumption (kg) Cheese 1.000 250 1,250 Tomatoes 3.000 600 3,600 (a) Compute country Blue and Red's opportunity costs of producing cheese. (b) When free trade is allowed, develop a scenario in which citizens of both countries would be better off (make a new table of input/output with trade)