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': "Garre's chronic non suppurative sclerosing osteomyelitis\nis characterized clinically by \nSelect and explain. \nA. EndosteaL bone formation, B. Periosteal bone formation, C. Resorption of medullary bone, D. Resorption of cortical bone", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]