5) The contract curve is a locus of points where: a) All possible indifference curves of one agent are tangent to another. b) Where pareto improvements can be observed. c) The price consumption curves of both agents are tangent to each other. d) Where there is equitable distribution of goods. 6) The following information about an economy are given: net taxation = 600, Government spending = 400; Private consumption = 800; imports = 200 and private saving = 300 a) National income will be 1,700 and if investment equals 300, exports must equal to 400. b) National income will be 1,500 and if investment equals 300, exports must equal to 200. c) National income will be 2,000 and if investment equals 300, exports must equal to 300. d) National income will be 1,800 and if investment equals 300, exports must equal to 400