XYZ Company uses job-order costing system, During January, XYZ's transactions included the following: Ending inventory of raw materials... .$4,000 Raw Materials purchased during the month..... .$50,000 Beginning inventory of raw materials.............. ..$5,000 What was the total cost of raw materials used in production for January? (A) $54,000 B $55,000 C) $51,000 D) $50,000