InstructionsAnswer the following questions.(a) Are sweeteners and packaging a variable cost or a fixed cost? What is the impact on the contribution margin of an increase in the per unit cost of sweeteners or packaging? What are the implications for profitability?(b) In your opinion are marketing expenditures a fixed cost variable cost or mixed cost to The Coca-Cola Company? Give justification for your answer.(c) Which of the two measures cited for measuring volume represents the activity index as defined in this chapter? Why might Coca-Cola use two different measures?