For a recent year, McDugal's company owned restaurants had the following sales and expenses (in Millions): Sales $29,000 Food and packaging $12,000 Payroll 7,700 Occupancy (rent, deprecation, etc.) 4,900 General, seling, and admin expenses 4,400 Other expense 500 Total expenses (29.580) Operating income (los) $(580) 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? Enter your answer in million, rounded to one decimal place million b. What is McDonald's contribution margin ratio? Round your percentage answer to one decimal place. c. How much would operating income increase if same-store sales increased by $1,700 million for the coming year, with no change in the contribution margin ratio or fixed cos? million d. What would have been the operating income or loss for the recent year if sales had been $1,700 million more