4 According to the Sarbanes-Oxley Act of 2002, the audit committee of an issuer is responsible for each of the following activities, except: Evaluating and reporting on the effectiveness of the company's internal control over financial reporting. Preapproving all audit and nonaudit services provided by the company's auditor. O Establishing procedures for the receipt, retention, and treatment of complaints received by the company regarding accounting, internal control, and auditing matters. The appointment, compensation, and oversight of the work of the registered public accounting firm employed by the company.