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: Medicine
[{'content': "All of the following are the good prognostic features for Hodgkin's disease except - \nSelect and explain. \nA. Hemoglobin > 10g/dl, B. WBC count < 15000/mm3, C. Absolute lymphocyte count < 600/uI, D. Age < 45 years", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]