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: Anatomy
[{'content': 'Coex to medulla ratio in adults of the kidney is? \nSelect and explain. \nA. 35-45%, B. 50-60%, C. 60-70%, D. 15-20%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 35-45%As the age progresses the amount of coex in the kidney decreases more compared to the medulla and hence the ratio decreases.In children the coico medullary ratio is high, almost to the extent of 1:1 (around 50%).In healthy adults it is 35-45%.", 'role': 'assistant'}]