Anderson's Department Store has the following data for inventory, purchases, and sales of merchandise for December for one of the items the company sells: Activity Beginning inventory Purchase 1, Dec. 2 Purchase 2, Dec. 5 Sale 1, Dec. 7 Sale 2, Dec. 10 Purchase 3, Dec. 12 Sale 3, Dec. 14 Units Purchase Price (per unit) Sale Price (per unit) $6.00 6.80 7.50 10 26 19 25 12 20 $12.00 12.00 8.00 12.00 Anderson's uses a perpetual inventory system. All purchases and sales were for cash