What is the primary difference between the HIPAA Privacy and the HIPAA Security Rules?

What is the primary difference between the HIPAA Privacy and the HIPAA Security Rules?
 
  A) The Privacy Rule focuses on things individuals can do to secure their data, whereas the Security Rule focuses on the roles of providers in protecting information.
  B) The Privacy Rule identities the persons who should have access to PHI, and the Security Rule ensures that only those people have access.
  C) The Privacy Rule identifies security safeguards for handling PHI that the Security Rule largely makes unnecessary and redundant.
  D) The Privacy Rule concerns the ethics of handling private health information, whereas the Security Rule concerns the practice of securing it.