Question 3. 1. Consider China and US in a Ricardian world. Each country produces two goods, corn and wheat. Each country has 600 units of labour hour available. The table of unit labour costs for production of each good in each country is below: Corn Wheat China 6 4 US 2 2 a. Derive China's production possibility frontier (PPF). (Write down an equation of China's PPF) b. Draw China's PPF. Have the quantity of corn on the horizontal axis.(Derive US's production possibility frontier (PPF). (Write down an equation of US's PPF) c. Draw US's PPF.Have the quantity of corn on the horizontal axis. d. Derive US's production possibility frontier (PPF). (Write down an equation of China's PPF) e. What is the slope of PPF of China? Explain your answer. f. What is the slope of PPF of US? Explain your answer. g. In the absence of trade, what would be the prices of corn in terms of wheat in China?