Contribution Margin and Contribution Margin Ratio For a recent year, McDonald's (MCD) company-owned restaurants had the following sales and expenses (in millions): Sales $39,400 Food and packaging $(11,460) Payroll (9,900) Occupancy (rent, depreciation, etc.) (11,160) General, selling, and administrative expenses (5,700) $(38,220) Operating income $1,180 Assume that the variable costs consist of food and packaging, payroll, and 40% of the general, selling, and administrative expenses. a. What is McDonald's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) $ 15,760 million b. What is McDonald's contribution margin ratio? 40 % c. How much would operating income increase if same-store sales increased by $2,400 million for the coming year, with no change in the contribution margin ratio or fixed costs? Round your answer to the closest million. million