_7. The account that shows product costs on a GAAP income statement is a. Direct Materials b. Work-in-Process c. Finished Goods d. Cost of Goods Sold e. None of the above _8. In activity-based costing, a cost pool consists entirely of a. the product costs associated with the activity b. all the activities with the same cost driver c. any costs not already included in manufacturing overhead d. non-manufacturing costs e. None of the above 9.The difference in net income using variable costing vs. absorption costing is due entirely to a. the calculation of contribution margin b. the subtraction of nonmanufacturing fixed costs c. the treatment of fixed manufacturing overhead d. amounts used to calculate total revenue e. None of the above 10. A cost that can be eliminated by choosing one alternative over another is called a(n) a. sunk cost b. avoidable cost c. opportunity cost d. allocated cost e. None of the above