What Principle Did the Court Apply in the Case of Madison

What principle did the court apply in the case of Madison Square Garden Corp., Ill. v. Carnera ?

A) When damages are not adequate, an injunction may be used to enforce a negative covenant regarding exclusive services that are unique and extraordinary.
B) When services contracted for are unusual or extraordinary, the injured party cannot obtain injunctive relief.
C) An injured party's damages may not be reduced by mitigation for his failure to accept or seek other employment of a different or inferior kind.
D) Damages are recoverable only if they were foreseeable at the time of entering into the contract.