The following data are available for Sellco for the fiscal year ended on January 31, 2020: Sales Beginning inventory Purchases, in chronological order 1,600 units 500 units @ $ 4 600 units @ $ 5 800 units @ $ 6 500 units @ $ 8 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.) Cost Of Goods Sold Ending Inventory FIFO LIFO Weighted average b. Assume that net income using the weighted-average cost flow assumption is $80,000. Calculate net income under FIFO and LIFO. (Round unit cost to 2 decimal places.) Net Income FIFO LIFO