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 poor prognostic factors for acute myeloid leukemias, except - \nSelect and explain. \nA. Age more than 60 years, B. Leucocytes count more than 1,00,000/ 1, C. Secondary leukemias, D. Presence oft (8:21)', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]