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': 'Acantholysis is seen in all of the following except – a) Pemphigusb) Bullous pemphigoidc) Steven–Johnson syndromed) Toxic epidermal necrolysis \nSelect and explain. \nA. ab, B. ad, C. cd, D. bd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]