John was injured when he fell into a hole while walking across his landlord's parking lot. He and his lawyer hope they can settle the claim. Which of the following statements about settlements are correct?

A) A case can be settled at any time as long as the disputing parties agree.

B) A case cannot be settled if an appeal has been filed.

C) A case can be settled provided the jury has not heard any testimony.

D) A case can be settled only if discovery has not commenced.

E) A case can be settles only after a lawsuit has been filed.