Motors has the following inventory information. Nov. 1 Inventory 30 units @ $8.00 8 Purchase 120 units @ $8.30 17 Purchase 60 units @ $8.70 25 Purchase 90 units @ $8.80 A physical count of merchandise inventory on November 30 reveals that there are 80 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 Select one: a. $1,758. b. $1,870. c. $1,812 d. $1,859