Which of the following is not a reason that the prevention and detection of fraud resulting from management override and collusion presents a significant challenge for the anti-fraud community?

A. Internal controls are generally designed to prevent a single fraudster acting alone.

B. Internal controls are best at assisting in the detection of fraud acts arising from collusion and management override.

C. The Board of directors maintains little direct supervisory oversight of executive operational actions and decisions.

D. Collusive and executive perpetrators tend to be better prepared to deal with oversight mechanisms such as internal and external auditors.