Over the course of a month, ABC co made 4 purchases. These are outlined in the table below. At the end of the month, ABC sold 150 units for exist16 each. At the end of the month, ABC sold 150 units for exist16 each. Determine Cost of Goods Sold using the average cost method. Using the above information, what is the Cost of Goods Sold using the average cost method? Assume that the inventory balance before the first purchase was zero. Select one: a. exist1, 450 b. exist1, 843 c. exist1, 750 d. exist1, 521