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': 'Requirement of folate per day during pregnancy is: \nSelect and explain. \nA. 200 mcg, B. 300 mcg, C. 500 mcg, D. 700 mcg', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Requirement of folate per day Healthy adults 200 mcg Pregnancy 500 mcg Lactation 300 mcg children 80-120 mcg Ref: Park 22nd edition, page 575.', 'role': 'assistant'}]