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': 'Which of the following structures develops from all the three germ layers? \nSelect and explain. \nA. Soft Palate, B. Mitral valve, C. Tympanic membrane, D. Tooth', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]