The Answer is A, please show work!

The following information was available from the inventory records of Bramble Corp. for January: Units 9100 Unit Cost Total Cost $9.73 $88543 6400 7900 10.32 10.69 66048 84451 Balance at January 1 Purchases: January 6 January 26 Sales January 7 January 31 Balance at January 31 (7400) (11100) 4900 Assuming that Bramble maintains perpetual inventory records, what should be the inventory at January 31, using the moving average Inventory method, rounded to the nearest dollar? (Round average cost per unit to 3 decimal places, e.g. 1.485.) X $50602 $50168 $50055 $51570