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': 'First aid to control external hemorrhage is: September 2011 \nSelect and explain. \nA. Endoscopic control, B. Apply pressure, C. Drugs, D. Operation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Apply pressure Immediate resuscitative manoeuvre to control haemorrhage: Direct pressure should be placed over the site of external haemorrhage', 'role': 'assistant'}]