Ralwins, Inc. had the following balances and transactions during 2018, from January 1 to December 31: Beginning Merchandise Inventory 100 units at $80 March 10 Sold 50 units June 10 Purchased 200 units at $82 October 30 Sold 150 units What would be reported for ending Merchandise Inventory on the balance sheet at December 31, 2018 if the perpetual inventory system and the weighted average inventory costing method are used? (Round unit costs to two decimal places and total costs to nearest dollar.) O A. $12,000 O B. $8,000 O c. $4,000 OD. $8,160