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
Splenectomy is useful in: September 2008 
Select and explain. 
A. Hemophilia, B. Polycythemia, C. Hereditary Spherocytosis, D. Thalassemia
C: Hereditary Spherocytosis
Answer: C: Hereditary Spherocytosis 
Explanation: Ans. C: Hereditary Spherocytosis