12) Use the below table to answer the following questions: Income Statement *** 2020 2019 2018 Sales Revenue 3,945 3,551 3,195 Cost of goods sold 2,846 2,704 2,569 Gross profit 1,099 847 627 Operating Expenses 765 845 755 Operating Income 334 2 (128) Balance Sheet Inventory 224 275 204 Accounts Receivable 804 754 798 Allowance for bad debts 80 75 80 a. Calculate the accounts receivable turnover. b. Calculate the accounts receivable days. c. Calculate the bad debt allowance as a percentage of sales. d. Calculate the gross profit margin. e. Calculate inventory turnover. f. Calculate inventory days