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': 'Most common site for eosinophilic granuloma is? \nSelect and explain. \nA. Radius, B. Skull, C. Lumbar veebra, D. Femur', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Skull The most common sites are skull bones, long bones, spinal veebrae, mastoid and mandible.", 'role': 'assistant'}]