Question 27.) The following data has been provided by Rock Co. regarding purchases and sales of inventory. 1-Sept Beginning Balance 3-Sept Sales 5-Sept Purchase 10-Sept Sales 15-Sept Purchase 18-Sept Sales 20-Sept Sales 25-Sept Sales Units Cost 200 $ 86.00 75 120 $90.00 85 160 $ 91.00 75 Required: Compute cost of goods sold and ending inventory using the perpetual inventory system for both FIFO and LIFO cost flow assumption