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': 'Indications for exchange transfusion are all except – \nSelect and explain. \nA. Unconjugated bilirubin > 18 mg/100 ml, B. Cord hemoglobin < 10 mg/100 ml, C. Cord bilirubin < 5 mg/100 ml, D. Bilirubin protein ratio > 3.5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cord bilirubin 5 or more is an indication.', 'role': 'assistant'}]