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: Surgery
[{'content': 'Which of the following does not move on deglutition \nSelect and explain. \nA. Subligual dermoid, B. Thyroid nodule, C. Pretracheal lymphnode, D. Thyroglossal cyst', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]