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 $10 per unit. Required: 1. Compute the amount of goods avallable for sale, ending inventory, and cost of goods sold at January 31 under each of the following Inventory costing methods: a. Weighted average cost. 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. \begin{tabular}{|l|l|l|l|} \hline & AmountofGoodsAvailableforSale & Ending Inventory & CostofGoodsSold \\ \hline a. Weighted average cost & & & \\ \hline b. First-in, first-out & & & \\ \hline c. Last-in, first-out: & & & \\ \hline d. Specific identification & & & \\ \hline \end{tabular}