The corton company uses a periodic inventory system. for the month of october, the beginning inventory consisted of 4,800 units that cost $12 each. two purchases were made in october, one for 2,000 units at $13 each, and one for 8,000 units at $13.50 each. additionally, corton sold 8,600 units during the month. if the fifo method is used, the ending inventory is?