An internal auditor is conducting an assessment of the purchasing department. She has worked the full amount of hours budgeted for the engagement; however, the audit objectives are not yet complete. According to IIA guidance, which of the following are appropriate options available to the chief audit executive?
1. Allow the auditor to decide whether to extend the audit engagement.
2. Determine whether the work already completed is sufficient to conclude the engagement.
3. Provide the auditor feedback on areas of improvement for future engagements.
4. Provide the auditor with instructions and directions to complete the audit.