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': 'A middle aged female has flaccid bullac in the skin and oral erosion. Histopathology shows intraepidermal acanthololytic blisters. The most likely diagnosis is \nSelect and explain. \nA. Pemphigus vulgaris, B. Paraneoplastic pemphigus, C. Bullous pemphigoid, D. Dermatitis hepatifOflis', 'role': 'user'}, {'content': "Answer: A \nExplanation: In pemphigus vulgaris skin involvement stas in the form of flaccid blisters. Cutaneous lesions are usually preceded by blisters and erosions of oral mucosa. HP 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 280,282. Reference IADVL's concise textbook of dermatology", 'role': 'assistant'}]