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 with bloody discharge belongs to which grade as per Southampton wound grading system \nSelect and explain. \nA. Grade 1, B. Grade 2, C. Grade 3, D. Grade 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Southampton wound grading system for healing and injection :\n\nGrade 0 is normal healing.\nGrade 1 is with bruising / mild erythema.\nGrade 2 is severe erythema with other features of inflammation at or around wound.\nGrade 3 is serous or bloody discharge.\nGrade 4 is presence of pus or deep infection or tissue break - down or significant haematoma.', 'role': 'assistant'}]