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: Pathology
[{'content': 'A male patient 59 year old complains of multiple swellings in the neck , fever, and weight loss. General examination reveals painless lymph node enlargement in the neck and on blood investigation anaemia is revealed. Serum albumin is 32 gm/l. Lymph node biopsy shows  Reed Sternberg cells.\nThe 5-year rate of overall survival (%) for this patient , according to The Hasenclever prognostic index for advanced Hodgkin lymphoma is: \nSelect and explain. \nA. 90, B. 74, C. 70, D. 59', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]