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': 'True about cellulitis of lower limb - \nSelect and explain. \nA. Infection of skin & subcutaneous tissue, B. Fever & malaise are common, C. Margins are distinct, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A It specifically affects the dermis and subcutaneous fat. The typical signs and symptoms of cellulitis is an area which is red, hot, and painful.', 'role': 'assistant'}]