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': 'Total iron requirement during pregnancy: \nSelect and explain. \nA. 500mg, B. 1000mg, C. 1500mg, D. 2000mg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Iron intake per day in Non-Pregnant woman is 21mg/day\nIron required per day in Non-pregnant woman is 1.6mg/day\nIron intake per day in Pregnant woman is 35mg/day\nIron requirement per day in pregnant woman is 2.8mg/day\nTotal iron requirement in pregnancy is 1000mg', 'role': 'assistant'}]