need help with this homework accounting ethics; no wrong answers but no plagiarism. Thanks (answers dont to have to be very long)

4. When should a CPA refrain from claiming estimated deductions on a clients tax return? 7. Describe some of the ethical duties that apply to tax return preparers. 9. Should a CPA tax return preparer have a duty to verify the information provided to them by clients? Why or why not? 11. What is tax fraud? How can you detect it? If you suspect tax fraud, what should you do?