Annenbaum Corporation uses the weighted average method in its process costing system. This month, the beginning inventory in the first processing department consisted of 1,800 units. The costs and percentage completion of these un ts in beginning inventory were: Percent Complete 65% 45% 00:37:05 Cost $7.100 $8,200 Materials costs Conversion costs A total of 9,300 units were started and 7300 units were transferred to the second processing desartment during the month. The following costs were incurred in the first processing department during the month Materials costs Conversion costs Cost $126,90 $298, 492 The ending inventory was 50% complete with respect to materials and 35% complete with respect to conversion costs. The cost per equivalent unit for conversion costs for the first department for the month is closest to: Multiple Choice O $18.67 O $23.60 O $20.00