4. The following are extracted from the financial statements of Park Inc., for 2019, 2018, and 2017. 2017 Net sales Cost of sales Selling and administrative expenses 2019 $233,000 (124,000) (95,000) 2018 $204,000 (110,000) (81,500) Other income: Interest Other Earnings before tax and extraordinary credit Provision for income tax Earnings before extraordinary credit Extraordinary credit (3,700) 100 $ 10,400 (4,800) 5,600 (3,050) 1,175 $ 10,625 (4,740) 5,885 1,510 $ 7,395 $ 5,600 Total assets Long-term debt Common equity Preferred stock Preferred dividends $202,000 24,600 123,000 4,000 280 $173,000 17,400 116,800 4,000 $161,000 15,200 112,800 4,000 280 280 (20 points) Required: a. Compute the following ratios for Park Inc. for 2019 and 2018. 1. Net profit margin 2. Total asset turnover 3. Return on assets 4. Return on investment 5. Return on total equity 6. Return on common equity 7. Gross profit margin b. Discuss the trend in profitability and identify specific causes for the trend