18. ABC Company had the following balances and transactions during 2009. Beginning inventory March 10 June 10 October 30 10 units at $70 per unit sold 8 units for $100 per unit purchased 20 units for $81 per unit sold 15 units for $100 per unit What was cost of ending inventory on the December 31, 2009 if the perpetual LIFO costing method is used? (3 Points) $560 $545 O $540 $490