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': 'In emergency, which aery can be safely ligated ? \nSelect and explain. \nA. Internal iliac, B. Popliteal, C. Renal aeryInternal carotid, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Internal iliac", 'role': 'assistant'}]