Farron Corporation, which has only one product, has provided the following data concerning its most recent month of operations: Selling price $100 Units in beginning inventory 0 Units produced 8,800 Units sold 8,400 Units in ending inventory 400 Variable costs per unit: Direct materials $15 Direct labor $57 Variable manufacturing overhead $3 Variable selling and administrative $7 Fixed costs: Fixed manufacturing overhead $132,000 Fixed selling and administrative $8,500 What is the net operating income for the month under variable costing? $10,700 $(19,300) $16,700 $6,000