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': 'Bilirubin UDP glucuronyl transferase activity is absent in \nSelect and explain. \nA. Crigler-Najjar type I, B. Crigler-Najjar type II, C. Rotor syndrome, D. Gilbert syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Syndrome\nBilirubin UDP glucuronyl transferase activity\n\n\n\n\nCrigler-Najjar type I\n\t\t\tCrigler-Najjar type II\n\t\t\tGilbert syndrome\nAbsent\n\t\t\tMarkedly reduced : 0-10% of Normal\n\t\t\tReduced : 10-30% of Normal', 'role': 'assistant'}]