Sheffield Ltd. uses the perpetual inventory system and reports the following inventory transactions for the month of June Date Explanation Units Unit Cost Total Cost $5 6 $7,050.00 13,920 1,410 2,320 (2,540) 4,700 1,380 (5,790) une 1 Beginning inventory 12 Purchases 15 Sale 16 Purchases 23 Purchases 27 Sales 32,900 11,040 8