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': 'Geographic lytic lesions in vault of skull with bevelled edges are seen with \nSelect and explain. \nA. Multiple myeloma, B. Eosinophilic granuloma, C. Hyperparathyroidism, D. Reticular cell CA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Eosinophillic Granuloma Features Disorder Geographic lytic skullQ Eosinophillic granuloma/Hand? Veebrae planaQ Schuller Christian ds/ Histocytosis', 'role': 'assistant'}]