Which of These Answers Does Not Describe ADR

Which of these answers does not describe ADR?

A) Adjudicatory processes whereby a final and binding determination is made on the dispute.
B) Referring the dispute to an agreed expert who will determine the matter.
C) Conducting a case where the courts would be a suitable venue or process to resolve the matter.
D) Various non-adjudicatory processes whereby the parties are encouraged to reach a self-made solution to the matter.