Transactions for the month of July for Shelly's Bookstore were as follows: Purchases July 1 8 (balance) 500 @ $7.30 1,300 @ $7.40 22 700 @ $7.60 30 250 @ $7.75 Sales July 3 12 350 @ $9.50 222 900 @ 9.75 25 800 @ 10.00 Assuming that perpetual inventory records are kept in dollars and units, determine the ending inventory and cost of goods sold using a. FIFO. b. LIFO. C. Periodic Weighted Average cost (round unit prices to the nearest cent).