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: Medicine
[{'content': 'Test used for Dubin Johnson syndrome? \nSelect and explain. \nA. Gamma Glutamyl Transferase, B. Serum Amylase Test, C. Bromosulphalein test, D. Hippuric acid test', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]