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: Physiology
[{'content': 'Amount of bile produced (ml/ day): September 2012 \nSelect and explain. \nA. 100 - 500, B. 500 -1000, C. 1000 -1500, D. 1500 - 2000', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. 500 - 1000', 'role': 'assistant'}]