This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': 'Cerebral blood supply \nSelect and explain. \nA. 55 ml/100 gm/min, B. 400 ml/100 gm/min, C. 100 ml/100 gm/min, D. 200 ml/100 gm/min', 'role': 'user'}, {'content': "Answer: A \nExplanation: The average cerebral blood flow in young adults is 54 mL/100 g/minRef: Ganong's Review of Medical Physiology Twenty-Third Edition Page No: 575", 'role': 'assistant'}]