This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, 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: Harshmohan textbook of pathology 7th edition. In systemic amyloidosis renal biopsy provides the best detection rate but rectal biopsy also has a good pickup rate. However gingiva and skin biopsy have poor result. .', 'role': 'assistant'}]