Amendment IX of the US Constitution states: "The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people." What is the primary purpose of this amendment?
A. To justify limiting liberties that are not explicitly mentioned in the Bill of Rights
B. To ensure that rights not listed in the Constitution may also be protected
C. To guarantee that powers not described in the Constitution belong to the people
D. To explain the difference between enumerated and unenumerated rights