Sammy's Sportswear sells sport jerseys. It has a May 31, 2018 year end. On February 28, 2018, Sammy's Sportswear had in inventory of 40 jerseys that each cost $ 20. During the next 3 months, Sammy's Sportswear purchased the following merchandise: Units Unit Cost Total March 50 $ 30 $ 1,500 April 100 $ 40 $ 4,000 May 150 $ 50 $ 7,500 During March, April, and May, Sammy's Sportswear sold the following merchandise: Units Unit Selling Price Total March 60 $ 60 $ 3,600 April 40 $ 70 $ 2,800 May 90 $ 90 $ 8,100 Operating expenses for March, April, and May totalled $ 3,500. Sammy's Sportswear used a perpetual inventory system. Assume that monthly purchases occurred on the first day of each month. Required: A. Calculate Sammy's Sportswear's ending inventory at May 31, 2018 using the moving- weighted-average costing method and the FIFO costing method. B. Prepare Sammy's Sportswear's May 31, 2018 income statement for both the moving- weighted-average costing method and the FIFO costing method. Record the gross margin and operating income