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': 'Which of the following is the SI unit for measuring blood pressure? \nSelect and explain. \nA. Ton, B. kPa, C. Barr, D. mmHg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The applicable SI unit for the measurement of blood pressure is kilopascal (k Pa). Ref: Chemical Principles By Steven S. Zumdahl, 6th Edition, Page 106; SI Units for Clinical Measurement By Donald S. Young, Page 22', 'role': 'assistant'}]