This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'The following has high frequency: \nSelect and explain. \nA. Beta waves, B. Alfa waves, C. Teta waves, D. Delta waves', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Beta waves has high frequency and low amplitude Delta waves has low frequency and high amplitude', 'role': 'assistant'}]