When It Comes to Apprising Others of a Potential or Actual

When it comes to apprising others of a potential or actual conflict of interest, which of the following actions should an employee follow?

A) It is best to share a conflict only with one's immediate supervisor.
B) Do not share or discuss a conflict with friends outside the workplace.
C) The best practice is to let all those potentially affected by the conflict of interest know about it.
D) The employee should follow company policies and guidelines and refrain from disclosing to friends until the company gives permission.