In Some Settings,identifying the Patient Who Is at Risk for Medication

In some settings,identifying the patient who is at risk for medication error (confused or critically ill) can be accomplished by which of the following processes?

A) Asking the patient his or her name and room number
B) Asking the patient's roommate the patient's name
C) Carrying the patient's chart with you to the room
D) Using the portable computer to scan the identification bracelet