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
Which of the following is the right choice of treatment for portasystemic encephalopathy? 
Select and explain. 
A. Diuretics, B. High protein diet, C. Emergency portosystemic shunt surgery, D. Lactulose
D: Lactulose
Answer: D: Lactulose 
Explanation: None