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
Decrease in osmotic fragility cause hemolysis in 
Select and explain. 
A. Thalassemia, B. β-Thalassemia, C. Sickle cell anemia, D. Methemoglobinemia
B: β-Thalassemia
Answer: B: β-Thalassemia 
Explanation: None