Murphy Incorporated, which produces a single product, has provided the following data for its most recent month of operation: Number of units produced 8,900 Variable costs per unit: Direct materials $98 $65 $7 Direct labor Variable manufacturing overhead Variable selling and administrative expenses $ 13 Fixed costs: Fixed manufacturing overhead $516,200 Fixed selling and administrative expenses $ 160,200 The company had no beginning or ending inventories. Required: a. Compute the unit product cost under absorption costing. b. Compute the unit product cost under variable costing