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': 'What is risk of neural tube defect in child, if  either parent is born with spina bifida. \nSelect and explain. \nA. 3%, B. 5%, C. 10%, D. 15%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Risk of NTDs in child if either parent is born with\n→ NTD is 5%\n→ Risk is 10% if couple have 2 affected children.', 'role': 'assistant'}]