Which of the Following Best Describes the Auditor's Responsibilities Concerning

Which of the following best describes the auditor's responsibilities concerning related parties?

A) investigate those transactions encountered during the audit
B) as related parties are discovered during the course of the audit, their existence should be noted in the working papers
C) obtain a list of all board members and place in the working papers
D) investigate the background of all related parties
E) determine, in the planning stage, the existence of related parties