Please quickly!!

Bidbid Company had the following transactions for the month of August. Date 1-Aug 10-Aug 25-Aug TOTAL Transaction Beginning Inventory Purchase Purchase Units 100 400 Per Unit (OMR) Total (OMR) 6.80 680 7.00 2,800 7.20 6,480 9,960 900 1400 The company sold 1,100 units during the month. Based on the above information you are required to answer the following questions. Using FIFO periodic inventory system Cost of goods sold Cost of ending inventory Using LIFO periodic inventory system Cost of goods sold Cost of ending inventory Using Average Method periodic inventory system Cost of goods sold Cost of ending inventory Which one of the following valuation methods will produce the highest profit