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
Hereditary spherocytosis, all are true, except 
Select and explain. 
A. Increased osmotic fragility, B. Autosomal dominant disorder, C. Increased surface area to volume ratio, D. Direct coombs test is diagnostic
C: Increased surface area to volume ratio
Answer: C: Increased surface area to volume ratio 
Explanation: None