This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharyngeal Arches, Subject name: Anatomy
[{'content': 'Pouches are lined by which germ layer? \nSelect and explain. \nA. Endoderm, B. Ectoderm, C. Mesoderm, D. Both Mesoderm and Ectoderm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pouches inside are lined by Endoderm Clefts outside are lined by Ectoderm', 'role': 'assistant'}]