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': 'Pulmonary micro-circulation differs from systemic circulation in having: \nSelect and explain. \nA. Resistance low, pulsatile flow high, B. Resistance low, capillary pressure low, C. Resistance high, pulsatile flow low, D. Resistance high, capillary pressure high', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Resistance low, Capillary pressure lowPulmonary microcirculation is characterized by remarkably low vascular resistance and low pressure and is very pulsatileQ.', 'role': 'assistant'}]