This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'All are features of necrotising fasciitis except \nSelect and explain. \nA. Dispropoional pain, B. Erythema beyond oedema, C. Dishwater pus, D. Crepitus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Signs and symptoms of necrotising infections Unusual pain Oedema beyond the area of erythema Crepitus Skin blistering Fever (often absent) Greyish drainage ('dishwater pus') Pink/orange skin staining Focal skin gangrene (late sign) Shock, coagulopathy and multiorgan failure Bailey and Love 27e pg: 30", 'role': 'assistant'}]