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: Surgery
[{'content': 'One of the following does not cause increase in the size of spleen in later stages \nSelect and explain. \nA. Sickle cell anaemia, B. Cirrhosis, C. Infectious mononucleosis, D. Hairy cell leukaemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]