ABC's Electronics uses a periodic inventory system and the conventional cost retail method to estimate ending inventory and cost of goods sold. The following data is available from the company records for the month of June 2021: Cost Retail Beginning inventory $x $ 390,000 Net purchases 783,000 1,500,000 Net markups 75,000 Net markdowns 105,000 Net sales 1,560,000 If the ending inventory at cost is $165,000, what was the beginning inventory at cost: O $240,000 O $271,050 $220,800 $297,750