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': "Bullous skin lesions with `intraepidermal split' is feature of – \nSelect and explain. \nA. Pemphigus vulgaris, B. Pemphigoid, C. Epidermolysis bullosa, D. All", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]