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: Anatomy
[{'content': 'Closure of Neural tube begins at: \nSelect and explain. \nA. Caudal end, B. Cephalic end, C. Podalic, D. Lumbar site', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cephalic end', 'role': 'assistant'}]