Aircard Corporation 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. The following are the transactions for the month of July.Calculate the cost of goods available for sale, ending inventory, and cost of goods sold if Aircard uses $($a$)$ FIFO, $($b$)$ LIFO, or $($c$)$ weighted average cost. $($Round "Cost per Unit" to $2$ decimal places.$)$

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