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': "Thyroid gland develops from \nSelect and explain. \nA. Thyroglossal duct, B. Rathke's pouch, C. Notochordal process, D. Embryonal disc", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]