QUESTION 15 Normanufacturing costs are generally classified into what two groups? O Conversion costs and prime costs. Dired materials and direct labor. O Marketing costs and administrative costs. Dired labor and manufacturing overhead. QUESTION 16 Product costs are. O expensed on the income statement when incurred. O treated as an asset and depreciated. inventoried until the units are sold. O considered current liabilities until paid. E