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': "All except one are unfavourable signs in early Hodgkin's Lymphoma \nSelect and explain. \nA. Elevated ESR, B. Extranodal disease, C. Stage A, D. Four or more regions involved", 'role': 'user'}, {'content': "Answer: C \nExplanation: Unfavourable signs in early Hodgkin's Lymphoma:-\n\nLarge mediastinal mass\nExtranodal disease\nElevated ESR\n4 or more involved regions\nPresence of B symptoms.", 'role': 'assistant'}]