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 $150 per unit. Compute contribution margin using variable costing assuming the company (a) produces and sells 3,000 units and (b) produces 4,000 units and sells 3,000 units