In the Event of Breach of Contract, a Claimant's Contributory

In the event of breach of contract, a claimant's contributory negligence may contribute to his losses suffered without breaking the chain of causation. Where the claimant's action in damages is contractual, when will his contributory negligence reduce his award under the Law Reform (Contributory Negligence) Act 1945?

A) At all times.
B) Whenever the contract breaker has a contractual duty of care.
C) Only where the contract breaker has a contractual duty of care which coexists with a tortious duty of care.
D) Never.