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': 'Synonym for Hailey Hailey disease is: \nSelect and explain. \nA. Cicatricial pemphigoid., B. Benign mucous membrane pemphigoid., C. Familial benign pemphigus., D. Paraneoplastic pemphigus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]