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': 'Calcium requirement above the normal during the first six month of lactation is - \nSelect and explain. \nA. 400mg\\/day, B. 550mg\\/day, C. 600mg\\/day, D. 75mg\\/day', 'role': 'user'}, {'content': "Answer: C \nExplanation: 600 md/dl calcium is neede for a lactating woman for first 6months.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-588 table no.29.", 'role': 'assistant'}]