Arlington Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March. Units sell for $85 per unit. Inventory costs are calculated at the end of the month. l-Mar inventory __-__i ___-_ _-__ For specific identification. the March 9 sale consisted of 80 units from beginning inventory and 340 units from the March 5 purchase; the March 29 sale consisted of 40 units from the March 16 purchase and 120 units from the March 25 purchase. a. Compute the Goods available for sale and the number of units for sale Cost of Goods Available for Sale Cost of Cost per Goods Unit Available for Sale # of Units Beginning inventory