Assume that the variable costs consist of food and packaging; payroll; and 40% of the general, selling, and administrative expenses. 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 $1,600 million for the coming year, with no change in the contribution margin ratio or fixed costs? Round your answer to the closest million. million