A new college graduate entered into an oral agreement with a freshman to lease the freshman her mini-refrigerator for a term of four years. The freshman was to pay the graduate $20 a month, of which $10 of the monthly charge was to be paid directly to the graduate's parents, in satisfaction of a debt the graduate owed her parents. While the graduate was putting the agreement into writing she accidentally failed to include the agreement to pay her parents directly. The freshman also failed to notice that the direct payment provision was missing before she signed the contract, which the graduate signed. If the parents bring an action against the freshman, which of the following will have the greatest effect on the outcome?
A Whether the parents were a party to the agreement between the graduate and the student.
B Whether the agreement between the graduate and the freshman was completely integrated.
C Whether the graduate was negligent in not discovering that the agreement omitted mention of the payment of money directly to her parents.
D Whether the freshman was negligent in not discovering that the agreement omitted mention of the payment of money directly to the parents