Marigold's Sporting Stores Inc. reported the following cost and net realizable value information for inventory at December 31: Item Units Unit Cost Unit NRV Skates: Bauer 13 $247 $388 CCM 10 $400 $338 Running shoes: Adidas 5 $108 $108 Nike 8 $105 $98 (a) Calculate the ending inventory balance for skates and running shoes using the lower of cost and net realizable value for each ite- Ending inventory balance Calculate the ending inventory balance for skates and running shoes using the historical unit costs provided. Ending inventory balance