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: Dental
[{'content': "When a child's head is on one side, his arm and leg, of that side, will extend, while of the contralateral side will bend, name the reflex: \nSelect and explain. \nA. Limb placement reflex., B. ATNR., C. Babinski reflex., D. Landau reflex.", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]