solve its Part B and Part C fast please

Cullumber Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow. Liabilities and Stockholders' Equity Current liabilities Long-term debt Total liabilities Yeferred stock, $5 par value ACC-650 TOPIC 8 Assignment 7 of 8 18 Total liabilities and stockholders' equity $11,216,695$10,561,830 Cullumber Medical Comparative Income Statement and Statement of Retained Earnings For the Year Cullumber Medical Comparative Income Statement and Statement of Retained Earnings For the Year Calculate the following profitability ratios for 2020. (Round answers to 1 decimal place, e.g. 50.1\%.) a. Gross margin percentage % b. Return on assets % c. Return on common stockholders' equity % Cullumber Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow. Ladtes ana stocknoders equity Gurrent liabilities $3,156,000 ACC-650 TOPIC 8 Assignment. Cullumber Medical Comparative Income Statement and Statement of Retained Earnings For the Year Cullumber Medical Comparative Income Statement and Statement of Retained Earnings ACC-650 TOPIC 8 Assignment