In Which of the Following Circumstances Is a Judge Permitted

Multiple Choice

In which of the following circumstances is a judge permitted to intervene? A judge has powers at common law to do all of the above.

A) To call his or her own witness of their own motion
B) To prevent offensive or vexatious cross-examination
C) To invite or suggest to counsel that there is no case to answer
D) None of the above
E) All of the above