Contribution Margin and Contribution Margin Ratio. For a recent year, Wicker Company-owned restaurants had the following sales and expenses (in millions)t: Assume that the varlable costs consist of food and packaging; payroll; and 40% of the oeneral, selling, and administrative experses. a. What is Wicker Company's contribution margin? Round to the nearest million. (Give answer in millions of dollars.) million b. What is Wicker Company's contribution margin ratio? Round your answer to one decimal place. c. How. much would income from operations increase if same-store sales increased by 31,100 millon for the consing year, wat no change in the costritution margin ratis or fired cou mililion