<u>Solution and Explanation:</u>
A court assumes that the written cntarct is the begining and the end of all the terms of the agreement and will not acept the parol evidence if it changes the meaning of the terms of contract.
Parol evidence should only be used to determine the inetntions of the parties at the time the contract was made, not after the fact.
Valid contract: The elemenst of valid contract must be seen.
Since Mrs B signed a contract with the specific terms that did not include a bonus, a court would not consider an oral agreement based on completing a yet to be written contract under the parol evidence rule.
hence, Mrs B cannot introduce the oral agreement under the parol evidence rule.