The following information is available for the past month for a retail store: Sales $100,000 Markups $10,000 Markdowns $8,000 Purchases (at cost) $38,800 Purchases (at retail) $107,000 Beginning inventory (at cost) $30,000 Beginning inventory (at retail) $46,000 What is the ending inventory at cost using the basic retail method? (Round cost-to-retail ratios to four decimal places.) O $24,415 $21,500 $23,216 $55,000