Suas prontate of 2010 on net sales. 5) The following selected transactions for Nova Scotian Tire occurred in October. Date Description Units Unit Cost Unit Selling Price Oct 1 Beginning Inventory 12 $164 1 Purchase 50 170 4 Sale 27 $270 Sale 23 Purchase 33 175 Sale 24 270 Purchase 31 190 30 Sale 24 280 270 Assuming that Nova Scotian Tire uses a perpetual inventory system, calculate cost of goods sold, ending inventory, and Gross Margin using: a) FIFO b) Moving weighted average . (Use the inventory record from the accounting forms provided)