Following the Norman Conquest in England, Jurors Were Selected to Assist

Following the Norman Conquest in England, jurors were selected to assist the judge in making the investigation and decision. At that time jurors were selected:

A) only if they were not aware of the facts of the case.
B) and advised not to consider any facts not brought out at the trial.
C) only if they were not titled or not knights.
D) because they had a special knowledge of the facts of the case.