help me in this Q..please solve all part clearly ...thank you

Q2: (A) Al Falah Co. uses a periodic inventory system. Its records show the following for the month of May, in which 65 units were sold. Date Details Units Unit Cost Total Cost May 1 Inventory 240 Purchases 275 Purchases Total 90 30 5. Ea Instructions: Compute the ending inventory at May 31 and cost of goods sold using the FIFO and LIFO methods. Prove the amount allocated to cost of goods sold under each method. (B): In its first month of operations, Al Hamd Company made three purchases of merchandise in the following sequence: (1) 300 units at $6, (2) 400 units at $7, and (3) 200 units at $9.Assuming there are 360 units on hand, compute the cost of the ending inventory under the average-cost method