The following data are available for Sellco for the fiscal year ended on January 31, 2020: Sales Beginning inventory Purchases, in chronological order 790 units 220 units @ $ 4 320 units @ $ 5 410 units @ $ 7 210 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.) Cost of Goods Sold Ending Inventory FIFO LIFO Weighted average b. Assume that net income using the weighted average cost flow assumption is $12,000. Calculate net income under FIFO and LIFO. (Round unit cost to 2 decimal places.) Net Income FIFO LIFO