Please help me with this 4 questions

1. Which statement about users of accounting information is incorreet? a) Regulatory authorities are considered internal users (b) T axing authorities are considered external users (c) Present creditors are considered external users (d) Management is considered an internal user. 2. Which is not one of the three primary business activities? (a) Financing. (b) Advertising. (c) Operating. (d) Investing. 3. Direct materials are a: Product Cost Yes Manufacturing Overhead Cost Yes Period Cost No Product Cost Yes Manufacturing Overhead Cost No Period Cost No Manufacturing Overhead Cost Yes Period Cost Yes Product Cost Yes Manufacturing Overhead Cost No Period Cost No Product Cost No 4. Which of the following costs would a computer manufacturer include in manufacturing overhead? (a) Depreciation on testing equipment. (b) The wages earned by computer assemblers. (c) The cost of the memory chips. (d) The cost of the disk drives