A company purchased 200 units for $60 each on January 31. It purchased 250 units for $30 each on February 28. It sold a total of 250 units for $70 each from March 1 through December 31. If the company uses the weighted - average inventory costing method, calculate the cost of ending inventory on December 31. (Assume that the company uses a perpetual inventory system. Round any intermediate calculations two decimal places, and your final answer to the nearest dollar.) O A. $9,000 O B. $8,666 O C. $19,500 O D. $10,834