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': 'Gingival biopsy is useful in the diagnosis of - \nSelect and explain. \nA. Sarcoidosis, B. Amyloidosis, C. Histoplasmosis, D. Scurvy', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Amyloidosis", 'role': 'assistant'}]