Can you explain this question

DISCUSSION QUESTIONS AND PROBLEMS 25-I9 {memes 15-5. 15-6) The following situations involve the provision of nonaudit services. Indicate whether providing the service is a violation of AICPA rules or SEC rules including SarbanesOxley requirements on independence. Explain your answer as necessary. a. Providing bookkeeping services to a small private company. The company happens to be a client of your sister's audit firm. b. Acting as the internal auditor of a private company when another CPA firm acts as their external auditor. c. Recommending a tax mitigation scheme to your client. d. Putting up advertisements saying that your firm guarantees 30 percent savings in tax liabilities for clients. e. Implementing an Enterprise Resource Planning (ERP) system for your audit client. f. Your junior auditor finds out that your client is losing money and tells his mother, who has invested in the company, to sell it's shares