A company's inventory records indicate the following data for the month of January Units Sold at Retail Units Acquired at cost 420 units @ $18 = $7,560 400 units @ $20 - $8,000 Date January 1 January 8 January 12 January 17 January 23 January 28 Activities Beginning inventory Purchase Sale Purchase Sale Purchase 720 units @ $70 460 units @ $22 - $10,120 330 units @ $70 520 units @ $24 - $12,480 If the company uses the LIFO perpetual inventory system, what would be the cost of the ending inventory? O $20,240. O $7,260 (0) $17,140. O $15,060. $21,020