Which one of the following statements gives a correct definition of a constitution?

A. The rule and procedures concerning the relationships among the structures of Government and their principal powers and functions
B. A fundamental statement of laws governing the citizens’s political rights, the political institutions, their functions and their relationships within a particular political community
C. A primary source of constitutional law, which serves as a guide for the decisions of the courts of law which interpret the rules
D. The ordering of political processes and institutions on the basic of a document that lays down the pattern of formal political institutions and embodies the basic political norms of a society