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: Radiology
[{'content': 'Moth eaten appearance is seen in all except? \nSelect and explain. \nA. Osteomyelitis, B. Hemorrhagic cyst, C. Osteosarcoma, D. OKC', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]