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