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
Which is not seen in urine in obstructive jaundice: 
Select and explain. 
A. Urobilinogen, B. Direct bilirubin, C. Both, D. None of the above
A: Urobilinogen
Answer: A: Urobilinogen 
Explanation: Urobilinogen