Swifty Shutters has the following inventory information. A physical count of merchandise inventory on November 30 reveals that there are 80 units on hand. Assume a periodic imventory system is used. Assuming that the specific identification method is used and that ending inventory consists of 20 units from each of the three purchases and 20 units from the November 1 inventory, cost of goods sold is $1501$1493$1443$1413