The following information is available for Mame, Ltd., at year end: Inventory, January 1 Retail Cost $110,000 $170,000 Purchases, net Markups, net Markdowns, net Sales, net 340,000 520,000 60,000 80,000 570,000 Assuming lower of cost or market is to be approximated, the estimated ending inventory under the conventional version of the retail method is A. $60,000 B. $100,000 C. $72,000 OD. $67,164