This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Which of the following conditions is most likely to lead to a dry tap during bone marrow aspiration- \nSelect and explain. \nA. Acute lymphoblastic leukemia, B. Multiple myeloma, C. Megaloblastic anaemia, D. Idiopathic myelofibrosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: bone marrow aspiration is generally unsuccessful and yields "dry tap" in idiopathic myelofibrosis. Reference textbook of Pathology 7th edition author Harsha Mohan page number 340 see laboratory findings', 'role': 'assistant'}]