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': 'Pemphigus vegetans is a variant of: \nSelect and explain. \nA. Pemphigus Foliaceus, B. Pemphigus vulgaris, C. Pemphigus erythematous, D. Bullous pemphigoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pemphigus vegetans is a variant of Pemphigus vulgaris characterized by Flaccid blisters, erosions, vegetating masses.', 'role': 'assistant'}]