This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Patient with NTD, dose of folic acid in next pregnancy \nSelect and explain. \nA. 0.5mg, B. 1mg, C. 2mg, D. 4mg', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Folic acid supplementation 4 mg daily 1 month before conception to about 12 weeks of pregnancy. Ref : Dutta book of obstetrics 8th Ed', 'role': 'assistant'}]