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: (Round your intermediate calculations to 2 decimal places and final answers to the nearest dollar amount.) Amount of Goods Available for Sale Ending Inventory Cost of Goods Sold a. Weighted average cost b. First-in, first-out c. Last-in, first-out d. Specific identification 2-a. Of the four methods, which will result in the highest gross profit? Weighted average cost First-in, first-out Last-in, first-out Specific identification 2-b.Of the four methods, which will result in the lowest income taxes? Weighted average cost First-in, first-out O Last-in, first-out Specific identification