REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 104 snowboards were sold. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 11 $119 $1,309 Sept. 12 Purchases. 47 122 5,734 Sept. 19 Purchases 52 123 6,396 Sept. 26 Purchases 26 124 3,224 Totals 136 $16,663 Additional data regarding the company's sales of snowboards are provided below. Assume that REI uses a perpetual inventory system. Date Units Sept. 5 Sale 8 Sept. 16 Sale 48 Sept. 29 Sale 48 Totals 1041