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 female presents with persistent painful oral lesions, with acantholytic cells. Most likely diagnosis is – \nSelect and explain. \nA. Pemphigus vulgaris, B. Dermatitis herpetiformis, C. Epidermolysis bullosa, D. Bullous pemphigoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Painful oral lesion with acantholysis suggests pemphigus vulgaris.', 'role': 'assistant'}]