This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
[{'content': 'Re-implantation time for lower limb is \nSelect and explain. \nA. 6 hrs, B. 4 hrs, C. 8 hrs, D. 10 hrs', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ischaemic time for digits is upto 8 hours ISchemic time for extremities Is 4-6 hours Organ containing bag should be placed in a solution of saline with ice Ref : Essential emergency trauma by kaushal Shah, Daniel Egan, Joshua quaas- 2010 Pgno :679', 'role': 'assistant'}]