This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Physiology
[{'content': 'All of the following statements about bronchial circulation are true, Except \nSelect and explain. \nA. Contribute 2% of systemic circulation, B. Contribute to gaseous exchange, C. Cause venous admixing of blood, D. Provide nutritive function of lung', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) Contribute to gaseous exchange(Ref: Ganong, 25th ed/p.637)Bronchial circulation supplies oxygenated blood to the lungs through bronchial arteriesBronchial circulation constitutes about 2% of the cardiac outputBronchial arteries supply lung till the level of terminal bronchiolesBronchial circulation doesn't contribute to gaseous exchange", 'role': 'assistant'}]