RJ Corporation has provided the following information about one of its inventory items: Number of Units Cost per Unt 11 Beginning Inventory 6/6 Purchase 910 Purchase 11/15 Purchase 400 800 1,200 800 3,200 $ 3,600 $ 4,000 $ 4.200 During the year, RJ sold 3,000 units What was ending inventory using the LIFO cost flow assumption under a periodic inventory system? O 5640000. O $880.000. $770,000 O $840,000