Aggravating and mitigating factors may be considered to determine the appropriate disciplinary action, except that mitigating factors shall not apply to Level 4 violations. Aggravating and mitigating factors may include, but are not limited to: Whether the House Officer took prompt and appropriate steps to mitigate harmful effects of a violation; whether the House Officer promptly and voluntarily reported the violation; and whether the House Officer was truthful or cooperated in the investigation.