Which of the following is incorrect in relation to the remedy of damages?

Which of the following is incorrect in relation to the remedy of damages?
A . A victim of a breach of contract may be unable to recover damages if he has failed to mitigate his loss.
B . Mitigation and remoteness of damage are irrelevant where a creditor is suing to recover an agreed debt.
C . A penalty clause in a contract cannot be enforced.
D . Damages cannot be claimed for a breach of a contract to provide personal services.

Answer: D