Eneri Company's inventory records show the following data: Units Unit Cost Inventory, January 1 10,000 $9.20 Purchases: June 18 9,000 8.00 November 8 6,000 7.00 A physical inventory on December 31 shows 4,000 units on hand. Eneri sells the units for $13 each. The company has an effective tax rate of 20%. Eneri uses the periodic inventory method. The weighted-average cost per unit is O $8.00. $8.01. $8.24. $9.30