please help me with this question asap. thank you so much

Use this information about Department G to answer the question that follow. Department G had 2,160 units 25% completed at the beginning of the period, 13,000 units were completed during the period, 1,800 units were 20% completed at the end of the period, and the following manufacturing costs were debited to the departmental work in process account during the period: Work in process, beginning of period $34,500 Costs added during period: Direct materials (12,640 units at $9) 113,760 Direct labor 115,380 Factory overhead 38,460 All direct materials are placed in process at the beginning of production, and the first-in, first-out method of inventory costing is used. What is the total cost of 2,160 units of beginning inventory that were completed during the period? Oa. $50,052 b. $55,740 c. $53,940 Od. $34,500