Inventory Costing Methods.Perpetual Methed The Gleem Sales Corporation uses the perpetual inventory system. On january 1 ; Gleem thad 2.600 units of product B with a unit cost of sto per unit. A summary of purchases and sales during the year follows: Required A. Assume that Gleem user the first-in, first-out method Compute the cost of goods sold for the year and the ending inventory balance at December 31 for product B b. Assume that Gleem uses the lastin, first-out method. Compute the cost of goods sold for the year and the ending inventory balance at December 31 for product a. c. Assume that Gleem uses the weighted-average cost method compute the cost of goods sold for the year and the ending inventory balance at December 31 for product 0 . Do not round untsyour final answers. Round to thenearest dollar