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
Which of the following does not move on deglutition 
Select and explain. 
A. Subligual dermoid, B. Thyroid nodule, C. Pretracheal lymphnode, D. Thyroglossal cyst
A: Subligual dermoid
Answer: A: Subligual dermoid 
Explanation: None