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U l_ 10. a. Based on the following data on taxable income and amount of tax, identify each type of tax system as progressive. regressive, proportional, or lump sum. (4 marks) i. Tax System A ii. Tax System B iii. Tax System C iv. Tax System D Taxable Tax System B Tax System C Tax System D ncome $40 000I $4,000 $6,000 $6,000 $5,000 $30,000 $12000 $5.000 $120,000 $24,000 $22,300 $12,000 $5,000 b. Suppose that the demand and supply functions are linear. An increase in the tax rate will always increase the tax revenue and decrease the deadweight loss. Explain. (6 marks)