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 Food and packaging Payroll $32,300 $11,661) (8,100) (6,869) General, selling, and administrative expenses (4,700) +$(31,330) $970 Occupancy (rent, depreciation, etc.) Operating income 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.) x million b. What is McDonald's contribution margin ratio? c. How much would operating income increase if same-store sales increased by $1,900 million for the coming year, with no change in the contribution margin ratio or tved costs? Round your answer to the closest million. million