Farris Corporation, which has only one product, has provided the following data concerning its most recent month of operations: 3 Selling price 136 9,250 Units in beginning inventory Units produced Units sold Units in ending inventory Variable costs per unit: Direct materials Direct labor Variable manufacturing overhead Variable selling and administrative Fixed costs: Fixed manufacturing overhead Fixed selling and administrative expense 138, 750 $ 9,400 What is the net operating income (loss) for the month under variable costing