Which Is Correct? in an Application for Summary Judgment by the Claimant the the Claimant

Which is correct?
In an application for summary judgment by the claimant the claimant will need to show that …

A) the defendant either has no defence to the action or the defence that has been filed does not amount to a legal defence to the claim.
B) the defendant has no real chance of succeeding in his defence.
C) the defendant has no real chance of succeeding in his defence and there is no other reason why the claim should be heard at trial.
D) the defence filed or the defence alluded to in pre-action correspondence shows no realistic or viable defence