Consider a multi-country, two good Ricardian model. Suppose that there are 3 countries in the world, A, B, and C and only two goods, 3. and y. The unit labor requirements for the 3 countries are given below: Counlry Unit Labor Unit Labor Total Labor Supply Requirements in 1'. Requirements in Y A 2 3 [2|]?! B 5 ID l C I 3 9D!) a. Write down the equations of the PPFs for each of these countries. h. What are the per unit opportunity costs of good I in terms of good 3: for each of the three countries'?I c. What are the autarkic relative prices of good it to good 3: in each of the three countries