Which of the following best demonstrates conformance with the Standards relating to continuing professional development of internal auditors?

Which of the following best demonstrates conformance with the Standards relating to continuing professional development of internal auditors?
A . Regulatory approval from an accrediting agency.
B. Self-assessments against a competency framework.
C. Approval and signoff from the board of directors.
D. A review by external auditors on an annual basis

Answer: C