In January 2016, United Airlines (UAL) had a market capitalization of $20.66 billion, debt of $12.01 billion, and cash of $5.09 billion. United Airlines had revenues of $39.58 billion. Southwest Airlines (LUV) had a market capitalization of $27.49billion, debt of $3.17 billion, cash of $3.06 billion, and revenues of $19.83 billion. 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