The charges to Work in Process-Assembly Department for a period, together with information concerning production, are as follows. All direct materials are placed in process at the beginning of production. a. The number of units in work in process inventory at the end of the period. units b. Equivalent units of production for direct materials and conversion. If an amount is zero or a blank, enter in "0". c. Costs per equivalent unit for direct materials and conversion. If required, round your answers to the nearest cent. d. Cost of the units started and completed during the period