Exam IIA-CIA-Part1 topic 6 question 293 discussion

According to IIA guidance, which of the following is true with regard to the internal audit charter?

1. It specifies the minimum resources needed for assurance engagements.
2. It requires final approval from senior management.
3. It defines the internal audit activity’s authority and responsibilities.
4. It describes the expectations for communicating the results of a quality assurance and improvement program.