(30 marks) a) After international economists recognized that there are limitations to the application of Adam Smith theory, David Ricardo introduced the comparative advantage theory, Describe any TWO (2) assumptions in Ricardian Model. (6 marks) b) The following data shows the production possibilities of Australia and New Zealand before international trade. It is assuming that wheat and cotton are the only two goods produced and both countries divide their resources equally to produces wheat and cotton. Country Wheat Cotton Australia 300 400 100 200 New Zealand Total output 400 600 i. Construct a table to show the opportunity cost of each product for each country. (5 marks) ii. Based on comparative advantage theory, determine the goods that should be specialized in both countries and explain the reasons. (4 marks) iii. Construct the table to show the amount of goods produced after specialization. (3 marks) iv. Suggest the term of trade that will benefit both countries. (4 marks) V. Explain TWO (2) tools used to restrict import using an appropriate example, (8 marks)