Which of the following is an example of someone violating HIPAA? O A. Rob encrypts his files whenever he has to send in patient billing to the health insurer. O B. Edgar walks away from his desk, leaving a computer screen with a patient's medical record exposed to passersby. O C. Jillian locks up all medical record files in a secure file cabinet and locks the door to her office at the end of each day. D. Sam tells a patient's boyfriend that he is unauthorized to give out the patient's information over the phone.