How does the weighted-average cost method differ from the average cost method?

	A.	Each inventory price is weighted by the quantity of units purchased at a given price with the weighted-average cost method.
	B.	An average of the inventory purchase prices is computed without regard to the quantities purchased with the weighted-average cost method.
	C.	The average cost method assumes all inventory items have the same cost, whereas the weighted-average cost method assumes costs differ.
	D.	The average cost method is used with periodic inventory systems and the weighted-average cost method is used with perpetual inventory systems.