Cosby uses a weighted-average process-costing system. All materials are added at the beginning of the process; conversion costs are incurred evenly throughout production. The company finished 40,000 units during the period and had 15,000 units in progress at year-end, the latter at the 40% stage of completion. Total material costs amounted to $220,000; conversion costs were $414,000 The cost of the ending work in process is$54,000.2- 78000. 3- 114000. 4- 195000. please provide answer with work.