This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'The daily requirement of Vitamin C is - \nSelect and explain. \nA. 40 mg, B. 100 mg, C. 200 mg, D. 500 mg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Requirement of Vitamin C The estimated requirement for vitamin C is 40 mg per day for adults. The normal body when fully saturated contains about 5 g of vitamin C. Ref: Park 25th edition Pgno : 675', 'role': 'assistant'}]