Hi, Could you help me with these two questions, please?

SECTION A Answer each question and explain as per the instructions at the bottom of each question. QUESTION A.1 Ozland has closed itself off to international trade. Dzland citizens noticed that the policy shift resulted in no change in the prices of computers, why may that be? A. Autarky prices and free trade prices are the same. B. Autarky prices are larger than free trade prices. 0. Autarky prices are smaller than free trade prices. D. The absolute value of autarky prices are negatively correlated with free trade prices. (1 mark) Explain your answer in up to 200 words and using a diagram (4 marks) QUESTION A.2 When Ozland closes off to trade, it notices that the number of firms in an industry doubles in size. What economic theory would help us explain this phenomenon? A. StolperSamuelson. B. Melitz. C. Ricardian. D. Ccurnot. (1 mark) Explain your answer in up to 200 words and using a diagram (4 marks)