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: Ans. is 'a' i.e., Sickle cell anaemia", 'role': 'assistant'}]