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: Medicine
[{'content': 'Splenomegaly is least likely associated with - \nSelect and explain. \nA. CML, B. Polycythemia rubra vera, C. Idiopathic myelofibrosis, D. Primary thrombocytosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: <p>Splenomegaly is seen in CML,polycythemia vera & chronic idiopathic myelofibrosis.Whereas in primary thrombocytosis, splenomegaly is least likely associated ,but hemorrhagic & thrombotic events are common. </p><p>Reference :Harsh mohan textbook of pathology sixth edition pg no 360.</p>', 'role': 'assistant'}]