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': 'Decrease in osmotic fragility cause hemolysis in \nSelect and explain. \nA. Thalassemia, B. β-Thalassemia, C. Sickle cell anemia, D. Methemoglobinemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]