Which of the following are examples of incidental disclosures of patient health information that are ...

Which of the following are examples of incidental disclosures of patient health information that are permitted? Select all that apply.
 
  A) A nurse working in a physician's office puts out a sign-in sheet for incoming patients.
  B) Two nurses are overheard talking about a patient through the door of an empty patient room.
  C) A nurse places a patient chart in a holder on the examining room door with the name facing out.
  D) A nurse leaves an x-ray on a light board in the hallway that leads to the examining rooms.
  E) A nurse calls out the name of a patient who is seated in the waiting room.
  F) A nurse leaves a reminder for an appointment on a patient's answering machine along with the results of lab work.