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
One of the following does not cause increase in the size of spleen in later stages - 
Select and explain. 
A. Sickle cell anaemia, B. Cirrhosis, C. Infectious mononucleosis, D. Hairy cell leukaemia
A: Sickle cell anaemia
Answer: A: Sickle cell anaemia 
Explanation: Ans. is 'a' i.e., Sickle cell anaemia