Sheffield Corp. is a retailer operating in Calgary, Alberta. Sheffield Corp, uses the perpetual inventory method. Assume that there are no credit cash. You are provided with the following information for Sheffield Corp, for the month of January 2017. transations; all amounts are setled in Quantity 167 106 Unit Cost or Selling Price Date Description Dec. 31 Ending inventory Jan. 2 Purchase an. 6 Sale Jan. 9 Purchase an. 10 Sale Jan. 23 Purchase Jan. 30 Sale $19 21 40 23 45 24 48 71 53 102 125 (a1) Calculate average cost for each unit. (Round answers to 3 decimal places,e.g. 5.125 an. 1 s Jan. 2s Jan. 6 an. 9 Jan. 10 Jan. 23 Jan. 30