The ABC INC uses a perpetual inventory system and had the following beginning inventory and purchases during August 2023: Date Transaction Units Per Units costs Total Cost ($) August 1 Inventory (beginning) 300 $14 $4,200 August 16 Purchase 200 $15 3,000 August 20 Purchase 300 $16 4,800 Total 800 $12,000 Total units 800 and Total goods available for sale $12,000 The ABC INC sales the following units (all on credit sales): August 15 August 28 200 units at $30 per unit 460 units at $35 per unit Required: a) Calculate the ending inventory and the cost of goods sold under perpetual inventory system by applying the FIFO Method. b) Record the purchase on August 16 and sales on August 28