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': 'Dermoid cyst is a form of \nSelect and explain. \nA. Cystic hamartoma, B. Cystic teratoma, C. Choriostoma, D. Hamartoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]