Gladstone Company tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the time of each sale, as if it uses a perpetual inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. Transactions Units Unit Cost Beginning inventory, January 1 1,800 $ 50 Transactions during the year: a. Purchase, January 30 2,500 62 b. Sale, March 14 ($100 each) (1,450 ) c. Purchase, May 1 1,200 80 d. Sale, August 31 ($100 each) (1,900 ) Calculate the cost of goods sold and ending inventory for Gladstone Company assuming it applies the LIFO cost method perpetually at the time of each sale.