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
For how long can a patient survive in anhepatic phase given full supportive treatment? 
Select and explain. 
A. 1-2 hour, B. 24-48 hours, C. 1 week, D. 2-4 weeks
B: 24-48 hours
Answer: B: 24-48 hours 
Explanation: None