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

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

Which one of the following is not a merit of unwritten constitution?

Which one of the following is not a merit of unwritten constitution?

A. An unwritten constitution has the quality of elasticity and adaptability
B. The flexibility of unwritten constitution prevents revolutions
C. An unwritten constitutions is rigid and hence not suited to deal with the emergencies
D. An unwritten constitution makes adjustment in the relations of various organs of government easy