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': "Ham's test is used in Screening of \nSelect and explain. \nA. Hereditary spherocytosis, B. G6PD deficiency, C. PNH, D. Any hemolytic disorder", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ham's test is the best screening test for paroxysmal nocturnal Hemoglobinuria.", 'role': 'assistant'}]