The beginning inventory of screws on August 1 was 80 units at $5.00.Following transactions took place during the month are as follows: August 1 sold 20 units August 10 purchased 100units @ $8.00 each August 20 sold 40 units The company uses the perpetual inventory method. Required: a. Prepare a schedule to compute the cost of goods sold and ending inventory for the month of June using FIFO . b. Prepare a schedule to compute the cost of goods sold and ending inventory for the month of June using Average cost basis .