Data below for the year ended December 31, 2021, relates to Houdini Inc. Houdini started business January 1, 2021, and uses the LIFO retail method to estimate ending inventory. Cost $ 66,000 280,000 Beginning inventory Net purchases Net markups Net markdowns Net sales Retail $104,000 420,000 20,000 40,000 375,000 Estimated ending inventory at cost is: Multiple Choice $90,720. $83,500. O $91,600