Abe and Gabriel Entered into a Contract for Abe to Furnish

Multiple Choice

Abe and Gabriel entered into a contract for Abe to furnish landscaping services for Gabriel's office complex.The contract provides the fee will be $75 per month.At the time Gabriel signs the agreement,the two discuss the fact that the services required in the winter will be less and the fee will be reduced to $50 per month.Abe adds as Gabriel is signing,"I just forgot to put that sliding scale in this contract.Don't worry - I'll take care of it because we understand each other." Gabriel:

A) will be permitted to introduce evidence about the winter fee reduction.
B) will only need to pay $50 during the winter months.
C) will pay $75 per month every month because of parol evidence.
D) none of the above