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: Surgery
[{'content': 'Extended criteria donor for liver, which of the following is\ntrue? \nSelect and explain. \nA. Age > 60 years, B. HEP C positive, C. Primary sclerosing cholangitis, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Extended criteria donor for liver are\n\nHep C positive\nHep Bcoore antibody positive\nModerate steatosis', 'role': 'assistant'}]