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': 'A middle aged female has flaccid bullae 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 hepatiformis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clues given are :-\n\n\nFlaccid bullae\nOral erosion (mucosal involvement)\nIntraepidermal acantholysis\n\n\nDiagnosis is pemphigus vulgaris.', 'role': 'assistant'}]