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': 'What is common between systemic and pulmonary circulation is \nSelect and explain. \nA. Volume of the circulation per minute, B. Peripheral vascular resistance, C. Pulse Pressure, D. Total Capacity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]