Gregs Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March. Greg's Bicycle Shop uses a periodic inventory system. Date Transactions Units Cost per Unit Total Cost March 1 Beginning inventory 20 $190 $ 3,800 March 5 Sale ($280 each) 15 March 9 Purchase 10 210 2,100 March 17 Sale ($330 each) 8 March 22 Purchase 10 220 2,200 March 27 Sale ($355 each) 12 March 30 Purchase 8 240 1,920 $ 10,020 Required: 1. Calculate ending inventory and cost of goods sold at March 31, using the specific identification method. The March 5 sale consists of bikes from beginning inventory, the March 17 sale consists of bikes from the March 9 purchase, and the March 27 sale consists of four bikes from beginning inventory and eight bikes from the March 22 purchase.