E 8-17 Average cost method, periodic and perpetual systems L08-1, L08-4 The following information is taken from the inventory records of the CNB Company for the month of September Beginning inventory. 9/1/2021 5,000 onts $10.00 Purchases 9/7 3,000 10.40 3,000 $10.75 9/25 Sales: 9/10 4,000 sits 5,000 9/29 7.000 units were on hand at the end of September Required: 1. Assuming that CNB uses periodic inventory system and emploss the were cost method determase cost Septe and September's ending inventory 2 Repeat requiremcat I assuming that the company ese perpetual inventory cost methods