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
[{'content': 'Treatment for portosystemic encephalopathy includes all excepts- \nSelect and explain. \nA. High protein diet, B. Lactulose, C. Oral neomycin, D. Enema', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]