When May a Court Rule That Parol Evidence May Be

When may a court rule that parol evidence may be admissible to further the court's understanding of an agreement?

A) When a court determines that a written agreement represents a complete and final version of the agreement.
B) When a court determines that a written agreement does not represent a complete and final version of the agreement.
C) When a court determines that there is disagreement between the parties over performance of the agreement.
D) When a court determines that the plaintiff failed to do sufficient research to determine if signing the agreement was advisable.
E) When a court determines that either party failed to obtain counsel to determine if signing the agreement was advisable.