PURCHASES SALES DATE UNITS UNIT COST S2 $3 N UNITSSALE PRICE PER UNIT 1-Jul 6-Jul 7-Jul 11-Jul 14-Jul 21-Jul 27-Jul 50 50 40 $10 $10 $10 50 $4 60 50 $5 80 200 PREPARE AN INCOME STATEMENT USING: LIFO PERPETUAL FIFO PERPETUAL AVERAGE PERIODIC ENDING INVENTORY BALANCE IN UNITS AND IN DOLLARS