In January 2019, United Airlines (UAL) had a market capitalization of $23.22 billion, debt of $13.74 billion, and cash of $4.15 billion. United Airlines had revenues of $41.08 billion. Southwest Airlines (LUV) had a market capitalization of $27.46 billion, debt of $3.55 billion, cash of $3.79 billion, and revenues of $22.12 billion. a. Compare the market capitalization-to-revenue ratio (also called the price-to-sales ratio) for United Airlines and Southwest Airlines. b. Compare the enterprise value-to-revenue ratio for United Airlines and Southwest Airlines. c. Which of these comparisons is more meaningful? Explain. a. Compare the market capitalization-to-revenue ratio (also called the price-to-sales ratio) for United Airlines and Southwest Airlines. The market capitalization-to-revenue ratio for United Airlines is . (Round to three decimal places.)