This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
[{'content': 'Maximum osmotic gradient is found in \nSelect and explain. \nA. Outer medulla, B. Inner medulla, C. Outer coex, D. Inner coex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In inner medulla osmotic gradient is high as 1200milliosmolarRef: Ganong&;s review of medical physiology; 24th edition; page no: 687', 'role': 'assistant'}]