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
Pulmonary micro-circulation differs from systemic circulation in having: 
Select and explain. 
A. Resistance low, pulsatile flow high, B. Resistance low, capillary pressure low, C. Resistance high, pulsatile flow low, D. Resistance high, capillary pressure high
B: Resistance low, capillary pressure low
Answer: B: Resistance low, capillary pressure low 
Explanation: B i.e. Resistance low, Capillary pressure lowPulmonary microcirculation is characterized by remarkably low vascular resistance and low pressure and is very pulsatileQ.