Sheridan Company had 260 units of product A on hand at January 1, 2020, costing $21 each. Purchases of product A during January were as follows: Date Jan. 10 18 28 Units 380 500 170 Unit Cost $22 23 24 A physical count on January 31, 2020 shows 370 units of product A on hand. The cost of the inventory at January 31, 2020 under the LIFO method is O $7880. O $7580. O $8680. O $8280