Sue and kevin kellman signed a contract for the construction of a cabin near pinetop. in building the $562,000 cabin, the builder discovered that it had to put the vent for the heating system in the area where the hall closet is located. the result was that the kellman’s had a halfcloset there instead of a fulllength closet that was open to the floor. the kellmans:
a. need not pay for the cabin because of this material breach.
b. can be compensated under the doctrine of force majeure.
c. can be compensated under the doctrine of commercial impracticability.
d. can be compensated under the doctrine of substantial performance

In the example given in the question, it is stated that the builder made changes in the plan to put the vent for the heating system in its place. If this is not stated in the contract that Sue and Kevin Kellman signed for the construction of the cabin, they may not have to pay for the cabin because of the material breach which is used when there is under performance or failure with respect to the terms on the signed contract.

I hope this answer helps.