Sprinkle Co. sells its product for $20 per unit. During 2013, it produced 60,000 units and sold 50,000 units (there was no beginning inventory). Costs per unit are: direct materials $5, direct labor $3, and variable overhead $1. Fixed costs are: $240,000 manufacturing overhead, and $30,000 selling and administrative expenses. The per unit manufacturing cost under absorption costing is a. $8. b. $9. c. $13. d. $14.