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 blood pressure measured by a sphygmomanometer: \nSelect and explain. \nA. Is lower than the intraaerial pressure, B. Is higher than the intraaerial pressure, C. Is same as the intraaerial pressure, D. Is the same with different cuff sizes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Is higher than intraaerial pressure', 'role': 'assistant'}]