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': 'Wound healing is \nSelect and explain. \nA. Impaired in anaemic patients, B. Not impaired by hypoproteinaemia, C. Stimulated by steroids, D. More rapid in young than in old', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]