The following information is available for the past month for a retail store Sales $3,000,000 Net Markups $72,000 $108,000 Net Markdowns Purchases (at cost) $2,184,000 Purchases (at retail) $3,300,000 $390,000 Beginning inventory (at cost) Beginning inventory (at retail) $594,000 What is the ending inventory at cost using the conventional retail method? Round to one decimal place. a $567,138 b. $858,000 c. $580,206 od $556,842