This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Ann Arbor classification is used for? \nSelect and explain. \nA. Retinoblastoma, B. Nephroblastoma, C. Neuroblastoma, D. Hodgkin lymphoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Robbins basic pathology 9th edition page no 442,tabke11-10 By this classification hodgkins and non hodgkins lymphoma are divided into 4stages', 'role': 'assistant'}]