Contribution margin and contribution margin ratis For a recent year, MCDonald's (MCD) company-owned rostaurants had the following sales and expenses (in millions): Assume thint the veribble conts consist of food and popec, poyroll, 25% of occupency and other erpenses, and 40N of the generat, selling. and Bdministrotive expenses. A. What is MeDonild's contrbution margin? x milion b. Whet is McDoneld's contribution margin ratio? Round to one decimal place. c. How much would opersting income incresse it stme-store swies increased by si, 000 million for the coming year, with no change in the contribution margin retio or fixes conts? Round your answer to the nearest tenth of a million (one decimal place). million