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': 'Daily requirment of iron in pregnancy is - \nSelect and explain. \nA. 1 mg, B. 2 mg, C. 3 mg, D. 3.5 mg', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 3.5 mg", 'role': 'assistant'}]