The following data are available for Sellco for the fiscal year ended on January 31, 2020: Sales Beginning inventory Purchases, in chronological order 770 units 270 units 320 units 430 units 240 units @$3 @ $5 @ $6 @ $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 $12,500. Calculate net income under FIFO and LIFO. (Round unit cost to 2 decimal places.)