The Canton Corporation shows the following income statement. The firm uses FIFO inventory accounting. CANTON CORPORATION Income Statement for 20X1 Sales $ 145,600 (11,200 units at $13.00) Cost of goods sold 84,000 (11,200 units at $7.50) Gross profit $ 61,600 Selling and administrative expense 8,736 Depreciation 12,500 Operating profit $ 40,364 Taxes (30%) 12,109 Aftertax income $ 28,255 a. Assume in 20X2 the same 11,200-unit volume is maintained but that the sales price increases by 10 percent. Because of FIFO inventory policy, old inventory will still be charged off at $7.50 per unit. Also assume selling and administrative expense will be 6 percent of sales and depreciation will be unchanged. The tax rate is 30 percent. Compute aftertax income for 20X2. (Do not round intermediate calculations. Round your answer to the nearest whole number.) b. In part a, by what percent did aftertax income increase as a result of a 10 percent increase in the sales price? (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.) c. Now assume that in 20X3 the volume remains constant at 11,200 units, but the sales price decreases by 15 percent from its year 20X2 level. Also, because of FIFO inventory policy, cost of goods sold reflects the inflationary conditions of the prior year and is $8.00 per unit. Further, assume selling and administrative expense will be 6 percent of sales and depreciation will be unchanged. The tax rate is 30 percent. Compute the aftertax income. (Round the sales price per unit to 2 decimal places but do not round any other intermediate calculations. Round your final answer to the nearest whole dollar amount.)