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
Extrahepatic cholestasis is associated with: 
Select and explain. 
A. T bilirubin in urine, B. T urobilirubin in urine, C. T bilirubin and T urobilirubin in serum, D. T bilirubin in serum
A: T bilirubin in urine
Answer: A: T bilirubin in urine 
Explanation: None