Duck Company uses the perpetual inventory method. The inventory records for Duck reflected the following January 1 Beginning inventory January 12 Purchase January 18 Sales January 21 Purchase January 25 Purchase January 31 Sales 1,600 units @ $4.90 1,700 units @ $4.70 1,800 units @ $6.40 1,600 units @ $5.00 1,400 units @ $4.80 1,750 units @ $6.40 Assuming Duck uses a FIFO cost flow method, the cost of goods sold for the sales transaction on January 31 is: Multiple Choice $8,545. $13,470. $8,845. $8,300