Pillows and Cushions, LLC has the following transactions for September of 2022. Compute the cost of goods sold, cost of ending inventory and gross margin for each of the following inventory flow methods: FIFO LIFO Average Cost Round everything to $ except ave cost which should be rounded to cents. See Dally Activity 16 for layout of calculations \begin{tabular}{|r|r|} \hline 3,900 & \\ \hline 10,800 & \\ \hline 7,000 & 14,700 \\ \hline 9,000 & \\ \hline 8,000 & 26,400 \\ \hline 38,700 & 41,100 \\ \hline \end{tabular} a) Compute cost of goods sold, the cost of ending inventory and gross margin for September using FIFO Compute cost of goods sold, the cost of ending inventory and gross margin for September using LIFO c) Compute cost of goods sold, the cost of ending inventory and gross margin for September using Ave. Cost