This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Alpha wave in EEG are seen in: March 2008 \nSelect and explain. \nA. Mental work, B. Awake state, C. Sleep, D. REM sleep', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Awake state', 'role': 'assistant'}]