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
[{'content': 'In hereditary spherocytosis mutation, not seen is? \nSelect and explain. \nA. Ankyrin, B. Spectrin, C. Band-3, D. Na+  Cl- channel protein', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]