Question Help A company purchased 400 units for $20 each on January 31. It purchased 170 units for $30 each on February 28. It sold 225 units for $45 each from March 1 through December 31. If the company uses the last - in, first-out inventory costing method, what is the amount of Cost of Goods Sold on the income statement for the year ending December 31? (Assume that the company uses a perpetual inventory system.) A. $6,200 B. $13,100 C. $8,000 OD. $5,100