please explain C and D for number 1

Analyze and compare Marriott and Hyatt Marriott International, Inc. (MAR), and Hyatt Hotels Corporation (H) are two major owners and managers of lodging and resort properties in the United States. Abstracted income statement information for the two companies is as follows for a recent year in millions): Marriott Hyatt Operating profit before other revenue and interest $1,368 $299 Other revenue (expense) 50 66 Interest expense (234) (76) Income before income tax expense $1,194 $289 Income tax expense (404) (85) Net income $ 780 $204 Balance sheet information is as follows: Marriott Hyatt Total liabilities $18,783 $ 3,841 Total stockholders' equity 5,357 3,908 Total liabilities and stockholders' equity $24,140 $ 7,749 The average liabilities, average stockholders' equity, and average total assets are as follows: Marriott Hyatt Average total liabilities $14,228 $3,719 Average total stockholders' equity 883 3,951 Average total assets 15,111 7,670 1. Calculate the following ratios for each year (Round ratios and percentages to one decimal place) Tiarriott Hyatt a. Return on total assets 6.7 3.7 vo b. Return on stockholders' equity 88.3 % 5.2 od c. Times interest earned X d. Ratio of total liabilities to stockholders' equity