A company purchased 100 units for $25 each on January 31. It purchased 150 units for $20 each on February 28. It purchases 80 units for $10 each on March 25. The company sold 150 units. If the company uses the first-in, first-out inventory costing method, what is the amount of Cost of Goods Sold? (Assume that the company uses a perpetual inventory system.) Select one: O a. Another amount O b. $2,200 c. $3,500 d. $3,000 e. $2,850