Quayle Bookstore had the following beginning inventory, purchases, and sales during the month of January Date Beginning Inventory/Purchases Sales Jan. 01 500 @ $9 14 380 @ $15 17 250 @ $10 25 250 @ $12 29 260 @ $17 Quayle uses the perpetual inventory method. According to a physical count, 360 units were on hand at January 31 (ending inventory). The cost of the inventory at January 31 (ending inventory), under the FIFO method is: $4,100 @ $6.520 $3,480 O $5.900