Which of the Following Best Describes the Term "Comparative Law

Which of the following best describes the term "comparative law?"

A) It is the study of the legal systems of different states.
B) It is the study of the laws governing the conduct of states and international organizations and their relationships with one another.
C) It is the study of the difference between public and private law in the United States.
D) It is the study of the difference between constitutions and administrative rules and regulations within the United States.
E) It is the study of international organizations and their structure.