At XYZ Company, two products are produced as follows: Larges sell for $94 per unit with variable costs of $60 per unit. Medium sell for $35 per unit with variable costs of $15 per unit. Total fixed costs for the company are $12,000.XYZ company typically sells five larges for every four medium. What is the Weighted Average Contribution Margin? Select one: O a. $27.87 b. $28.78 C. $28.87 d. $27.78