CP7-1 Analyzing the Effects of Four Alternative Inventory Costing Methods IL Scrappers Supplies tracks the number of units purchased and sold throughout each accounting period but period, December 31 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 ransactions Units Unit Cost Beginning inventory, January 1 Transactions during the year: a. Purchase on account, March 2 b. Cash sale, April 1 ($44 each) c. Purchase on account, June 30 d. Cash sale, August 1 ($44 each) 180 $28 290 30 (330) 230 34 (55) TIP: Although the purchases and sales are listed in chronological order, Scrappers determines the cost of goods sold after all of the purchases have occurred. Required: December 31 under each of the following inventory costing methods: (Round "Cost per Unit" to 2 decimal places.) 1. Compute the cost of goods available for sale, cost of ending inventory, and cost of g a. Last-in, first-out