Help Save a Corporation produces a single product The company's variable costing income statement for November appears below Columbia Corporation Income Statement For the Month ended November 30 Sales ($22 per unit) Variable expenses: $902,000 Variable cost of goods sold 574,000 123,000 Variable selling expense Total variable expenses Contribution margin Fixed expenses 205,000 Manufacturing Selling and administrative 106, 680 71,120 177,800 s 27,200 Total fixed expenses Net operating income During November, 35,560 units were manufactured and 8,770 units were in beginning inventory. Variable production costs have remained constant on a per unit basis over the past several months 1 of 15 Next >