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 is seen in - \nSelect and explain. \nA. Sleep, B. REM sleep, C. Awake state, D. Mental work', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Awake', 'role': 'assistant'}]