PB7-1 Analyzing the Effects of Four Alternative Inventory Methods in a Periodic Inventory System LO 7-3Q Mojo Industries 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 accounting period, January 31. The inventory's selling price is $9 per unit. Units Unit Cost $2.50 Total Cost $625 Transactions Inventory, January 1 Sale, January 10 Purchase, January 12 Sale, January 17 Purchase, January 26 3.00 250 (200) 300 (150) 80 900 4.00 320 Required: 1. Compute the amount of goods available for sale, ending inventory, and cost of goods sold at January 31 under each of the following inventory costing methods: a. Weighted average cost. (Round the weighted-average unit cost to two decimal places.) b. First-in, first-out. c. Last-in, first-out. d. Specific identification, assuming that the January 10 sale was from the beginning inventory and the January 17 sale was from the January 12 purchase. 2. Of the four methods, which will result in the highest gross profit? Which will result in the lowest income taxes