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: Surgery
[{'content': "Commonly affected lymph nodes in non-Hodgkin's Lymphoma are all except \nSelect and explain. \nA. Epitrochear Lymph nodes, B. Peripheral lymph nodes, C. Inner waldeyer ring, D. Mediastinal lymph nodes", 'role': 'user'}, {'content': "Answer: D \nExplanation: Inner Waldeyer Ring, Epitrochlear lymph nodes, Peripheral lymph nodes are commonly involved in Non-hodgkin's Lymphoma.", 'role': 'assistant'}]