With Regard to the Process of a Civil Law Suit

With regard to the process of a civil law suit, which of the following is true?

A) A "counterclaim" is an action by the defendant back against the plaintiff.
B) Any admission by the defendant at the examination for discovery can be used against him by the plaintiff at trial.
C) The plaintiff must prove his case on the balance of probabilities, not beyond a reasonable doubt.
D) The "statement of claim" is a document registered by the plaintiff which contains a summary of the allegations that support the cause of action.
E) All of the above are true.