120.57 points PA7-1 Analyzing the Effects of Four Alternative Inventory Methods in a Periodic Inventory System [LO 7 Gladstone Company tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. Units Unit Cost 2,800$60 Transactions Beginning inventory, January 1 Transactions during the year a Purchase, January 30 b. Sale, March 14 (S100 each) c. Purchase, May 1 d. Sale, August 31 ($100 each) 4,25074 (2,450) 2,950 90 (2.900) Assuming that for Specific identification method (item 1d) the March 14 sale was selected two-ilfths from the beginning inventory and three-fiftns from the purchase of January 30. Assume that the sale of August 31 was selected from the remainder of the beginning inventory with the balance from the purchase of May