Using the weighted average method of process costing, the cost of the total inventory at the beginning of the period PLUS the costs added during the period should equal which one of the following?

		Cost of equivalent units completed during the period minus the cost of ending inventory
		Cost of total units in ending inventory plus the cost of units completed during the period
		Cost of equivalent units in ending inventory plus the cost of units completed during the period
		Cost of incomplete units in beginning inventory plus cost of units completed during the period