Answer:
Option C. Because the condition of the faucet is not material to the contract.
Step-by-step explanation:
The reason is that Colleen can not rescine as Ben has no intention of benefiting from the concealment of the $30 faucet cost and does not represents a material value of the house, which is thousands of times greater in value. So concealing $30 issue of almost half million worth house has no point and is not material amount so Colleen will have to perform the contract.