Q4: two units of A. Total fixed costs for this firm are $1,260,000. Additional selling prices and cost information for both products follow: Product Selling Variable Price per unit Costs per unit $72 $40 48 28 A......... B Required: (a) Calculate the contribution margin per composite unit. (b) Calculate the break-even point in units of each individual product. Sales in units .... Jan. Feb. March April 1,700 1,900 2,100 1,600