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: Pediatrics
[{'content': 'Biochemical screening of newborn infants by heelprick blood samples is performed by using the – \nSelect and explain. \nA. Tay–Sachs Card, B. Duchenne Card, C. Guthrie Card, D. Maple Card', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]