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: Unknown
[{'content': "Toxic Epidermal necrolysis is also called - \nSelect and explain. \nA. Sweet's syndrome, B. Lyell's syndrome, C. Hailey and Hailey's disease, D. Duhring's disease", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans-B', 'role': 'assistant'}]