Which of the Following Is True About Administrative Hearing Officers

Which of the following is true about administrative hearing officers (and administrative law judges) and the work they perform?

A) They have never worked for the very agency that is prosecuting the case that they will ultimately decide.
B) Private communication between the administrative law judge and anyone who is a party to an agency proceeding is encouraged.
C) An administrative law judge is a private accountant appointed to hear administrative cases.
D) administrative law judges are usually attorneys.