Which of the Following Is Correct Regarding the Origins of British

Which of the following is correct regarding the origins of British jurisprudence?

A) The native population had no established system of justice before the Norman Conquest.
B) The first codification of laws in Great Britain took place under George III.
C) The Plantagenets are credited with centralizing the judicial system and the beginning of common law.
D) Feudalism, the social system based on a series of reciprocal obligations, had no effect.
E) All of the above.