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: Medicine
[{'content': "The classification proposed by the International Lymphoma Study Group for non - Hodgkin's lymphoma is known as - \nSelect and explain. \nA. Kiel classification, B. REAL classification, C. WHO classification, D. Rappaport classification", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]