please show work for question 3

1. Which is not a characteristic of managerial accounting information a. Emphasizes the external financial statements b. Provides detailed information about individual parts of the co c. Emphasizes relevance d. Focuses on the future 2. A management accountant who avoids conflicts of interest m meets the ethical standard of a. confidentiality. b. competence c. credibility. d. integrity 3. Dunaway Company reports the following costs for the year: Direct Materials Used Direct Labor Incurred Manufacturing Overhead Incurred Selling and Administrative Expenses $120,000 150,000 75,000 175,000 How much are Dunaway's period costs? a. $250,000 b. $270,000 c. $345,000 d. $175,000