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: Social & Preventive Medicine
[{'content': 'The daily requirement of Vitamin C is- \nSelect and explain. \nA. 40mg., B. Ming, C. 200 mg, D. 500 mg', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 40 mgo The daily requirement for vitamin C --> 40 mg.", 'role': 'assistant'}]