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: Medicine
[{'content': 'Iodine requirement in pregnancy and lactation is \nSelect and explain. \nA. 90 mcg, B. 120 mcg, C. 150 mcg, D. 250 mcg', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pre school Children - 90 mcg.\nSchool Children ( 6-12 years ) - 120 mcg.\nAdults ( > 12 years ) - 150 mcg.\nPregnancy and lactation - 250 mcg.', 'role': 'assistant'}]