This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
[{'content': 'Tympanic membrane develops from? \nSelect and explain. \nA. Mesoderm, B. Endoderm, C. Ectoderm, D. All three germ layers', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) All three germ layersRef: Longman's medical embryology 12th ed. / 326", 'role': 'assistant'}]