Which of the Following Statements Is Untrue

Which of the following statements is untrue?

A) The most effective internal control procedures are preventative, ie, they are designed to avoid inefficiencies or theft occurring.
B) An example of a theft avoidance procedure is to require cash to always be held in a locked safe.
C) An example of a theft detection procedure would be to conduct a surprise search of employee bags as staff leave the hotel.
D) Control is best achieved when completion of a particular task is assigned to three or more people.
E) Internal audits generally involve an appraisal of the extent to which document procedures are adhered to.