The Wife of a Patient Who Is in a Coma

The wife of a patient who is in a coma is optimistic about her husband's recovery because he opens his eyes and appears to be awake.What is the most appropriate response to the wife's comment?

A) "Your husband's behaviour is only a reflex and does not really show improvement in his condition."
B) "Sleep-wake cycles are encouraging signs of recovery,and you should be optimistic about your husband's condition."
C) "You are right to be optimistic.When patients begin to recover from a coma,the first behaviours seen are those of wakefulness."
D) "Your husband may show sleep-wake patterns if the part of the brain responsible for arousal is not injured,but these patterns do not reflect activity of the higher brain centres."