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: Physiology
[{'content': 'Which is not seen in urine in obstructive jaundice: \nSelect and explain. \nA. Urobilinogen, B. Direct bilirubin, C. Both, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Urobilinogen', 'role': 'assistant'}]