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: Surgery
[{'content': 'The gall bladder is capable of distending ..... ml. ? \nSelect and explain. \nA. 10, B. 20, C. 40, D. 50', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e. 50", 'role': 'assistant'}]