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': 'Subepidermal bullae on trunk and flexural surface with linear C3/IgG basement membrane deposite are feature of – \nSelect and explain. \nA. Bullous pemphigoid, B. Pemphigus vulgaris, C. Linear Ig A disease, D. Dermatitis herpatifonnis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bullous pemphigoid shows :- \n\nSubepidermal bullae;\nC3 and IgG linear band at denno - epidermal junction (Basement membrane).', 'role': 'assistant'}]