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': 'B cell prolymphocytic leukemia patients differ from those with B cell chronic lymphocytic leukemia in \nSelect and explain. \nA. Presenting at a younger age, B. Having a lower total leucocyte count, C. Having prominent lymphadenopathy, D. Having a shorter survival', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]