This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
One is not the feature of obstructive jaundice 
Select and explain. 
A. Pruritus, B. Elevated level of serum bilirubin, C. Raised alkaline phosphatase, D. Raised urinary urobilinogen
D: Raised urinary urobilinogen
Answer: D: Raised urinary urobilinogen 
Explanation: Features of Obstructive jaundice Most common cause of obstructive jaundice is CBD stones Characterized by dark urine, clay coloured stools, icterus and Pruritus Presence of urobilinogen in urine rules out obstructive jaundice USG is the best test to differentiate medical from surgical jaundice There is raised ALP levels, cholesterol and reduced Urobilinogen Ref: Harrison's 19th edition Pgno : 1998