Accounts and their balances from the trial balance of Roller Skate Store for the year ended December 31, 2015 are below. Roller Skate Store Trial Balance December 31, 2015 Account Debit Credit Accounts payable $ 3,000 Accounts receivable $ 7,500 Accumulated depreciation, equipment 8,000 Depreciation expenses, equipment 3,500 Sales Discount 300 Cash Cost of goods sold Equipment Insurance expense Interest expense ABC, capital ABC, withdrawals Inventory Notes payable Rent expense. Rent revenue Salaries expense Sales Sales return and allowance Supplies 1,300 75,000 76,110 250 40 32,300 Supplies expense 1,100 2,200 6,000 160 1,200 1,200 120,000 1,500 300 40 170,500 $ 170,500 a) Use the information above to prepare a multi-step income statement for the year ended December 31, 2015 (10 marks) b) Calculate the gross profit ratio for the year ended December 31, 2015. Interpret the ratio. (2 marks)