According to The MA Code of Ethics, which of the following is one of the...

Internal auditors shall continually improve their proficiency and effectiveness and quality of their services.

Internal auditors shall respect and contribute to legitimate and ethical objectives of the organization.

Internal auditors shall not accept anything that may impair or be presumed to impair their professional judgment.

Internal auditors shall be prudent in the use and protection of information acquired in the course of their duties.