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
Hereditary spherocytosis is characterised by - 
Select and explain. 
A. Membrane skeleton abnormalities, B. Microtubule defect, C. Accumulation of intermediate filament, D. None of the above
A: Membrane skeleton abnormalities
Answer: A: Membrane skeleton abnormalities 
Explanation: None