This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neck), Subject name: Surgery
[{'content': 'Sistrunk operation is done for - \nSelect and explain. \nA. Throglossal fistula, B. Branchial cyst, C. Parotid tumor, D. Lateralabarrent thyroid', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Thyroglossal fistula", 'role': 'assistant'}]