Suppose selected comparative statement data for the giant bookseller Barnes & Noble are presented here. All balance sheet data are as of the end of the fiscal year (in millions) Net sales Cost of goods sold Net income Accounts receivable Inventory Total assets Total common stockholders' equity 2019 2018 $4,750 $5,501 3,400 3,901 151 108 1,150 1,250 2,950 3,250 900 1,131 65 75 Compute the following ratios for 2019. (Round asset turnover to 2 decimal places, e.g 1.83 and all other answers to 1 decimal place, e.g. 1.8 or 2.5%) (a) Profit margin (b) Asset turnover (c) Return on assets (d) Return on common stockholders' equity (e) Gross profit rate times