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': 'Poor prognosis in AML is indicated by: \nSelect and explain. \nA. Inversion 16, B. Translocation 15;17 (t15; 17), C. Normal cytogenecity, D. Monosomy 7', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Monosomy 7 is associated with a very poor prognosis. Patients with t (8, 21), t (15: 17) and inv (16) have a good prognosis.', 'role': 'assistant'}]