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: Pathology
[{'content': 'In earlier stage of chronic osteomyelitis, radiographic appearance will be: \nSelect and explain. \nA. No radiographic features are seen., B. Mottled appearance., C. Moth- eaten appearance., D. Clear glass appearance.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]