Your Grandfather Has an Advance Directive and the Staff at the Hospital

Your grandfather has an advance directive and the staff at the hospital where he is receiving end-of-life interventions was informed of this.However, the physician and other health care providers are not following it.Your family is very unhappy about this situation.Why would a physician not honor an advance directive?

A) They are too busy to remember that your grandfather had one.
B) Hospitals do not follow advance directives.
C) Physicians are reluctant to follow advance directives due to perceived legal vulnerability.
D) They must be informed by the patient, not the family, of the advance directive.