Question 10 4 pts A company purchased 10 units for $5 on January 3. It purchased 10 units for $7 each on February 28. It sold 10 units on March 1. If the company uses the last in, first out (LIFO) inventory costing method, what is the dollar amount for ending inventory on the December 31 balance sheet, assuming that the company uses a perpetual inventory system? O $50 O $60 O $70 O $120