Question 40 3 pts The following lots of Commodity Z were available for sale during the year. Use this information to answer the questions that follow. Beginning inventory First purchase Second purchase Third purchase 10 units at $30 25 units at S32 30 units at S34 10 units at $35 The firm uses the periodic system, and there are 20 units of the commodity on hand at the end of the year. What is the ending inventory balance at the end of the year according to the LIFO method? O $655 $620 O S690 O $659