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': 'The positioning of tongue in infantile swallowing is \nSelect and explain. \nA. Posterior, B. Medial, C. Lateral, D. Anterior', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]