can someone please explain this to me? I don't understand how you solve this without an amount of goods purchased number..!?

BUS-214-01-2218 - Financial Accounting = 6.2 Apply and compare various inventory cost methods Use the following data of Beeline Company Click the icon to view the data) Beeline's cost of goods sold using the average cost method would be O A. $5,175 OB. $7.440 C. $1,860 D. $5,580 - X Data table Units 24 Beginning inventory Purchase on July 3 Total Unit Cost Cost $ 115 S 2,760 130 4,680 ? 2 36 Sales 45 Print Done