Harvey's Junk Jewelry started business January 1, 2021, and uses the LIFO retail method to estimate ending inventory. Listed below is data accumulated for the year ended December 31, 2021: Cost $16,900 50,900 4,400 3,60 Retail $24,900 87,500 Beginning inventory Purchases Freight-in Purchase returns Net markups Net markdowns Net sales Employee discounts 4,500 6,400 7,900 72,500 2,600 To the nearest thousand, the estimated ending inventory at cost is (round cost-to-retail ratio to whole percentage): Multiple Choice $21,000