Good Stuff Manufacturing uses a job-order costing system. Yearend account balances are as follows: Manufacturing Overhead Control $ 700,000 Manufacturing Overhead Allocated 940,000 Work in Process Inventory 100,000 Finished Goods Inventory 300,000 Cost of Goods Sold 800,000 REQUIRED: If the Overhead Balance is considered material and the proration method is used, what will be the ending balance of Cost of Goods Sold after the adjustrent has been made? a $ 1,040,000 b. $ 960,000 c. $ 1,440,000 d. $ 640,000