Aircard Corporation tracks the number of units purchased and sold during each accounting period, but applies the inventory costing method at the end of each period as if it were using a periodic inventory system. Below are the transactions for the month of July.

		units			The unit cost
1 July	Starting Inventory		2.500		$	35
July 5th	Sold out		1.500
july 13	Purchased		6.500			39
17 July	Sold out		3.500
25 July	Purchased		8.500			41
July 27	Sold out		5.500

If Aircard uses ( a ) FIFO, ( b ) LIFO, or ( c ) weighted average cost, 

calculate the cost of goods available for sale, finished inventory, and goods sold.