4 AAA Co. uses a periodic inventory system and has the following information in regard to its inventory: Beginning inventory Purchase on January 25 Purchase on March 15 Purchase on October 2 400 units 15 500 units 16 400 units 17 600 units 18 6,000 8,000 6,800 10,800 $31,600 10 points 00:39:44) . Goods available for sale There are 700 units in ending inventory. What is the amount of the ending inventory using the FIFO method? Multiple Choice $14,000 $6,000 $10,800 $12,500