An organization's internal audit plan includes a recurring assurance review of the human resources (HR) department. Which of the following statements is true regarding preliminary communication between the auditor in charge (AIC) and the HR department?

1. The AIC should notify HR management when the draft audit plan is being developed, as a courtesy.

2. The AIC should notify HR management before the planning stage begins.

3. The AIC should schedule formal status meetings with HR management at the start of the engagement.

4. The AIC should finalize the scope of the engagement before communicating with HR management.