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': "The (EEG) curves are called: \nSelect and explain. \nA. Delta curves, B. Berger's Rhythm, C. Berger's Rhythm, D. REM Rhythm", 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Berger's rhythm", 'role': 'assistant'}]