What Was the Goal of the Plebeians in Demanding the Law

What was the goal of the plebeians in demanding the Law of the Twelve Tables?

A) Codification and publication of the law code so that the patricians would not have a monopoly on legal knowledge
B) Creation of a written tax structure so that plebeians would be able to anticipate tax rates they would pay on merchandise
C) Formation of regularized rules related to military service and the benefits gained from such service
D) Establishment of a clear bureaucratic structure so that the plebeians would have access to proper bureaucrats to resolve their concerns