This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vestibulobullous disorders, Subject name: Dental
[{'content': 'Acntholysis is characteristic of- \nSelect and explain. \nA. pemphigus vulgaris, B. Pemphigoid, C. Erythema multoforme, D. Dermatitis herpctiforrnis', 'role': 'user'}, {'content': "Answer: A \nExplanation: HP of pemphigus vulgaris shows a suprabasal cleft with bulla formation just above the basal layer with a tomb stone appearance and with blister cavity containing acantholytic cells and inflammatory cells.Page no 282. Reference IADVL's concise textbook of dermatology", 'role': 'assistant'}]