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': 'All are histicytosis except - \nSelect and explain. \nA. Letter seiwe syndrome, B. Chloroma, C. Handschuller-christian triad, D. Eosinophilic granuloma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chloroma", 'role': 'assistant'}]