Answer:
The correct answer is letter "B": can be compensated under the doctrine of substantial performance.
Explanation:
Substantial performance is a concept in law by which and an individual who signed a contract can sue the counterparty because part of the contract was not fully respected but the incomplete portion is so minimal or irrelevant that it could not be considered as a breach of the contract.
Thus, the Kellman's can sue the cabin house builder for not constructing a full-length hall closet and could be compensated for that change.