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': 'The test used to diagnose Dubin Johnson syndrome is- \nSelect and explain. \nA. Bromsulphalein test (BSP), B. Scrum transaminases, C. Hippuratc test, D. Gamma glutamyl transferase level', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A prolonged BSP dye excretion test is diagnostic of Dubin Johnson syndrome\nBSP is a dye which is removed from circulation by the same mechanism as bilirubin.', 'role': 'assistant'}]