The chief audit executive (CAE) of a small internal audit activity (IAA) plans to test conformance with the Standards through a quality assurance review. According to the Standards, which of the following are acceptable practice for this review?
1. Use an external service provider.
2. Conduct a self-assessment with independent validation.
3. Arrange for a review by qualified employees outside of the IAA.
4. Arrange for reciprocal peer review with another CAE.