What Is Substantial Performance

What is substantial performance?

A) If one side has performed, but not completely, so that the other side has received a benefit, the nonbreaching party owes something for the value received.
B) If one side has made efforts to perform, so that the other side has received a detrimental service, the nonbreaching party owes something for the effort made.
C) If the goods delivered according to the contract are the exact things ordered, and the party receives a detrimental performance, the nonbreaching party owes something for the damages done.
D) If one side has performed according to the contract and the other side is not satisfied, the latter owes something for the effort made.
E) When zero performance was executed, none of the parties owe anything to each other.