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: Pathology
In hereditary spherocytosis mutation, not seen is? 
Select and explain. 
A. Ankyrin, B. Spectrin, C. Band-3, D. Na+  Cl- channel protein
D: Na+  Cl- channel protein
Answer: D: Na+  Cl- channel protein 
Explanation: None