Farris Corporation which has only one product, has provided the following data concerning its most recent month of operations: S144 Selling price Units in beginning inventory units produced Units sold units in ending inventory 9,350 8,950 400 Variable costs per unit: Direct materials Direct labor variable manufacturing overhead variable selling and administrative expense Fixed costs: Fixed manufacturing overhead Fixed selling and administrative expense 18 5148, 252 S 9,6ee What is the net operating income (loss) for the month under variable costing? a $(31.950 b. $6.000 c. $17-250 d $11 250