Required information Use the following information for the Exercise below. (Algo) [The following information applies to the questions displayed below] Barnes Company reports the following for its product for its first year of operations. Exercise 19-6 (Algo) Computing contribution margin at different production levels LO P2 The company sells its product for $180 per unit. Compute contribution margin using variable costing assuming the company (a) produces and sells 1,500 units and (b) produces 1,800 units and sells 1,500 units