Patients Who Are in a Vegetative State Appear to Be

Patients who are in a vegetative state appear to be awake but show no awareness of their surroundings,and do not respond to sight,sound,or touch.Given the work of researchers at University of Western Ontario,what can you say about people in this state?

A) So far,all attempts to communicate with them have failed
B) They may be able to communicate if you find the right technique
C) Researchers using fMRI has shown them to be completely unresponsive
D) It's important to acknowledge and accept that the person you knew no longer exists