SBA Inc. use wood (raw material) for its production line \#2. Its beginning inventory on January 1st,2020, is 100 units purchased at $320. SBA Inc. has purchased during 2020 the following items: - March 1st - July 1st - October 1st 50 units at $347 200 units at $343 100 units at $346 SBA Inc. has sold during 2020 the following items: The ending inventory of the company is (in terms of quantity): 100+50100+200230+100=120units Required: Use the three costing methods for the valuation of inventory as of the end of October 2020