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': 'Haemostasis in scalp wound is best achived by - \nSelect and explain. \nA. Direct presure over the wound, B. Catching and crushing the b;,=.eders by haemostats, C. Eversion of galea aponeurotica, D. Coagulation of bleeders', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]