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): b. Assume that net income using the weighted-average cost flow assumption is $12,900. Calculate net income under FIFO and LIFO. Complete this question by entering your answers in the tabs below. Calculate cost of goods sold and ending inventory under the cost flow assumptions, FIFO, LIFO and Weighted average (using a periodic inventory system): Note: Round unit cost to 2 decimal places