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: Medicine
Most common cause of hereditary elliptocytosis is mutation in 
Select and explain. 
A. Spectrin, B. Ankyrin, C. Band 3, D. Band 4.1
A: Spectrin
Answer: A: Spectrin 
Explanation: None