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': '"Autospleenectomy" is a feature seen in: \nSelect and explain. \nA. HS, B. Sickle cell anemia, C. G6PD deficiency, D. Thalessmia minor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sickle cell anemia', 'role': 'assistant'}]