You Are Listening to a Lecture Describing an Adversarial System

You are listening to a lecture describing an adversarial system of justice. Which of the following is NOT part of the lecture?

A) the judge plays an active role in investigating the alleged offence and questioning witnesses
B) system of justice premised on each party having an obligation to present evidence and argument to support its position
C) the judge, a neutral figure, remains relatively passive during a trial
D) the judge ensures that the appropriate questions are asked and that the rules of a criminal court case are followed