169.A firm sells two different products, A and B. For each unit of B, the firm sells two units of A. Total fixed costs for this firm are $1,260,000. Additional selling prices and cost information for both products follow: Required: (a) Calculate the contribution margin per composite unit. (b) Calculate the break-even point in units of each individual product. (c) If pretax income before taxes of $294,000 is desired, how many units of A and B must be sold