A firm sells two products, Regular and Ultra. For every unit of Regular sold, two units of Ultra are sold. The firm's total fixed costs are $1,742,000. Selling prices and cost information for both products follow. The contribution margin per composite unit is: Product Regular Ultra Unit Sales Price $ 33 36 Variable Cost Per Unit $ 15 9 Multiple Choice $18 O O $72. o $63. O $27. O $45