Audit workpapers are essential documents that provide evidence of the audit work performed and the conclusions reached.

Option A: While review notes can be useful, they do not need to be retained if they do not add value to the audit evidence.

Option B: Audit workpaper documentation policies are typically established by the internal audit department, not reviewed or approved by the audit committee.

Option C: Management should not review the workpapers for accuracy as this could compromise the independence of the audit.

Option D: Preparing workpapers helps auditors document their work thoroughly, facilitating learning and professional development​​.