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 swelling moves on protrusion of tongue - 
Select and explain. 
A. Thyroglossal cyst, B. Branchial cyst, C. Ranula, D. Cyst in hyoid bone
A: Thyroglossal cyst
Answer: A: Thyroglossal cyst 
Explanation: None