Delmott sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Below is information relating to Delmott's purchases of Xpert snowboards during September. During the same month, 175 Xpert snowboards were sold. Date Units Explanation Unit Cost Total Cost Sept. 1 $3,591 Inventory 21 $171 Sept. 12 Purchases 176 13,552 Sept. 19 15,130 Purchases 85 178 Sept. 26 34 6,086 Purchases 179 Totals $38,359 217 snowboards below. Assume that Delmott uses a perpetual inventory system Additional data regarding the company's sale of Xpert are provided Date Units Sept. 5 Sale 14 Sept. 16 Sale 82 Sept. 29 Sale 79 175 Totals