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': 'Which of the following reflex persists as voluntary standing: \nSelect and explain. \nA. Walking or stepping reflex., B. Limb placement reflex., C. Parachute reflex., D. Landau reflex.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]