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
All of following cause intravascular hemolysis, except 
Select and explain. 
A. Mismatched blood transfusion, B. Paroxysmal cold hemoglobinuria, C. Thermal burns, D. Hereditary spherocytosis
D: Hereditary spherocytosis
Answer: D: Hereditary spherocytosis 
Explanation: Ans. is 'd' i.e., Hereditary spherocytosis