A. It is appropriate for the surveillance of screen display messages to be assigned to computer operators.

B. Systems analysts are responsible for reviewing the current system to make sure that it is meeting the needs of the organization, and when it is not, they will provide the design specifications to the programmers of the new system. Systems analysts should not do programming, nor should they have access to hardware, software or data files. Therefore, the functions of computer operations and systems development should be segregated.

C. It is appropriate for data conversion to be assigned to computer operators.

D. It is appropriate for minor maintenance according to schedule to be assigned to computer operators.