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': 'Dithionite test is done for assessing - \nSelect and explain. \nA. Hb F, B. Hb E, C. Hb A, D. Hb S', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Hb S Dithionite test is a rapid screening tube test for the detection of HbS.", 'role': 'assistant'}]