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Gladstone Limited 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 perlodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting perlod, December 31. Requlred: 1. Compute the amount of goods available for sale, ending inventory, and cost of goods sold at December 31 , under each of the following inventory costing methods. For Specific Identification, assuming that the March 14 , sale was selected two-fifths from the beginning inventory and three-fifths 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 1 . (Do not round Welghted average cost per unit. Round your final answers to the nearest dollar amount.) 2-a. Of the three methods, which will result in the highest gross profit? Welghted average cost First-In, first-out Specific Identification 2-b. Of the three methods, which will result in the lowest Income taxes? Weighted average cost First-in, first-out Specific Identification