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': "Which of the following is not a cause of pancytopenia with hypocelllular marrow \nSelect and explain. \nA. Acquired aplastic anemia, B. Fanconi's anaemia, C. Some myelodysplasia, D. Aleukemic leukemia", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aleukemic leukemia - pancytopenia with cellular marrow.', 'role': 'assistant'}]