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: Gynaecology & Obstetrics
[{'content': 'A couple consulted you for counselling regarding conception. The couple had child born with anencephaly. What is recurrence risk for an open neural - tube in next pregnancy \nSelect and explain. \nA. 10%, B. 3 % to 5 %, C. 25%, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The recurrence risk is 3\xa0→ 5 % approximately if a couple has had previously a child with either anencephaly or spina bifida.', 'role': 'assistant'}]