Which one of the following facts, if it was the only one true and known to both parties on January 15, would best serve Carpenter as the basis for a defense in an action brought against him by Householder for breach of contract?
Carpenter's busy schedule permitted him to work on Householder's house only during the month of March.
Any delay in making the repairs would not seriously affect Householder's use of the property.
The cost of making repairs was increasing at the rate of three percent a month.
The area around Householder's property was frequently flooded during the month of March.