This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Medicine
[{'content': 'True for Hodgkin&;s stage IAi s - \nSelect and explain. \nA. Chemotherapy is best, B. Radiotherapy is best, C. Total radiation therapy is best treatment, D. Fever and wt loss is always present', 'role': 'user'}, {'content': 'Answer: B \nExplanation: <p>Historically , radiotherapy to lymph nodes alone has been used to treat localised stage 1A disease effectively ,with no adverse prognostic features.</p><p>Davidson&;s principles & practice of medicine 22nd edition pg no 1043</p>', 'role': 'assistant'}]