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': 'What is true about branchial cyst \nSelect and explain. \nA. Present in anterior triangle of neck, B. Cauterization is done, C. Arises from 2 nd cleft, D. Present in lower 3 rd of neck', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]