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
[{'content': 'NESTROFT test is used for screening of \nSelect and explain. \nA. Thalassemia, B. Sickle cell anemia, C. PNH, D. PCH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: NESTROFT (Naked eye single tube red cell osmotic fragility test) is used for screening \xa0of thalassema.', 'role': 'assistant'}]