If You Are a Therapist and Your Client Makes Repeated

If you are a therapist and your client makes repeated death threats against a specific individual, what is your ethical responsibility?

A) notify law enforcement that your client is making death threats against a specific individual and allow them to handle the situation
B) warn the individual who your client is making threats against and notify law enforcement
C) protect the confidentiality of your client and keep the information to yourself
D) first attempt to have your client sign a "no harm" contract; if he does not comply, then inform law enforcement