Metaline Corp. uses the weighted average method for inventory costs and had the following information available for the year. The number of units a ferred to finished goods during the years Beginning Work in Process (30% complete, $1,900) Ending inventory of work in Process (70% complete) Total units started during the year 280 units 480 units 4,000 units Multiple Choice 4,200 units 4,000 units looooo 4.522 units 4.028 units 3,800 units