The following data are available for Sellco for the fiscal year ended on January 31, 2017: Sales 760 units Beginning inventory 260 units @ $ 4 Purchases, in chronological order 300 units @ $ 5 450 units @ $ 6 190 units @ $ 7 Required: a. Calculate cost of goods sold and ending inventory under the cost flow assumptions, FIFO, LIFO and Weighted average (using a periodic inventory system): (Round unit cost to 2 decimal places.)