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
The classification proposed by the International Lymphoma Study Group for non - Hodgkin's lymphoma is known as - 
Select and explain. 
A. Kiel classification, B. REAL classification, C. WHO classification, D. Rappaport classification
B: REAL classification
Answer: B: REAL classification 
Explanation: None