I am stuck on this question. We went over one like this in class but I am confused?

Product Cost Flows Complete the following T-accounts: Materials Inventory Wages Payable Finished Goods Inventory Manufactured Overhead ,28 9,000 Work in Process Inventory 1,500 O X 200 0 x 4,00 X 0 x O X 1,200 0 X O X O X 18,120 1,200 18,000 250 9,000 4,500 0 X 0 500 Cost of Goods Sold Check 0 x