Date Monarch Company uses a weighted-average perpetual inventory system, and has the following purchases and sales: Activities Units Acquired at Cost Units Sold at Retail January 1 Purchase 20 units @ $10 = $200 January 12 Sales 12 units sold January 20 Purchase 18 units @ $11 - $198 What is the value of ending inventory? (Round average cost per unit to 2 decimal places, and final answer to the nearest dollar.) Multiple Choice $126 $398 $278 2130 Multiple Choice O $126. $398. O $278. O $120. O $272