The following data are available for Sellco for the fiscal year ended on January 31, 2020: Sales 800 units Beginning inventory 200 units @ $4 Purchases, in chronological order 300 units @ $ 4 400 units @ $ 6 220 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.) FIFO LIFO Weighted average Cost of Goods Sold Ending Inventory b. Assume that net income using the weighted-average cost flow assumption is $12,100. Calculate net income under FIFO and LIFO. (Round unit cost to 2 decimal places.) Net Income FIFO LIFO