Netta Shutters has the following inventory information. July 1 Inventory 15 units @ $8.00 8 Purchase 60 units @ $8.30 17 Purchase 30 units @ $8.40 25 Purchase 45 units @ $8.80 A physical count of merchandise inventory on November 30 reveals that there are 45 units on hand. Assume a periodic inventory system is used. Cost of goods sold (rounded to the nearest dollar) under the average-cost method is $889. $897. $870. $886