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: Dental
[{'content': 'The term erythroderma is applied when any inflammatory skin disease affects more than ___ of body surface area \nSelect and explain. \nA. 70%, B. 80%, C. 90%, D. 100%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Erythroderma is involvement of more than 90% of skin in any disorder.', 'role': 'assistant'}]