5) Hadley Corporation, which has only one product, has provided the following data concerning its most recent month of operations: S 159 Selling price Units in beginning inventory Units produced Units sold Units in ending inventory 7,800 7,700 100 Variable costs per unit: Direct materials Direct labor Variable manufacturing overhead Variable selling and administrative expense Fixed costs: Fixed manufacturing overhead 47 50 S 304,200 S 84,700 Fixed selling and administrative expense What is the net operating income for the month under variable costing? A) $3,900 $3,800 C) $7,700 D) S(6,100)