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: Pathology
[{'content': 'Blistering in Bullous pemphigoid is because of antibodies against \nSelect and explain. \nA. BPAG2, B. BPAG1, C. Filaggerin, D. Keratin 5', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]