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': 'Massive splenomegaly with pancytopenia- \nSelect and explain. \nA. CLL, B. Pure red cell aplasia, C. CML, D. Myelofibrosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Chronic idiopathic myelofibrosis shows symptoms like anaemia, leukocytopenia, thrombocytopenia ,with massive splenomegaly ,hepatomegaly is present in half the cases. petechial and other bleeding problems are found in about 20% cases reference: textbook of Pathology 7th edition author Harsha Mohan page number 340', 'role': 'assistant'}]