Which of the Following Is More Likely Than the Others

Which of the following is more likely than the others to be admitted on the grounds of 'relevance'?
For evidence to be admissible in a civil court it must be relevant to the issues in question.

A) In a claim against a publican for failing to buy his beer from his landlord brewer, the defence of the publican was that previously the brewer had supplied him with bad beer; to rebut this the brewer sought to adduce evidence that he had supplied good beer to other customers.
B) In an action between A and B as to the specific terms of the contract between them A sought to adduce evidence that similar terms were in other contracts he had with other customers.
C) In a road traffic accident the defendant sought to adduce evidence that he had an unblemished driving record throughout the 30 years he had been driving.
D) In a claim for injuries sustained in an accident at work the claimant sought to adduce evidence that the working practices in the factory had been changed since the accident.