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 indicated in -a) Sickle cell anemiab) Hereditary spherocytosisc) Hemoglobin C diseased) Hodgkins lymphoma 
Select and explain. 
A. acd, B. bcd, C. abd, D. ab
C: abd
Answer: C: abd 
Explanation: None