Perpetual LIFO. A record of transactions for the month of May was as follows: Purchases May 1 (balance) 400 @ $4.20 May 3 1,300 @ $4.10 6 800 @$4.30 12 700 @ $4.40 1,200 @ $4.50 500 @ $4.55 Sales 200 @ $7.00 1,000 @ 7.00 900 @ 7.50 400 @ 7.50 1,400 @ 8.00 18 Assuming that perpetual inventory records are kept in dollars, determine the ending inventory using LIFO