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': 'Biopsy of which of the following is usually taken for the diagnosis of systemic amyloidosis- \nSelect and explain. \nA. Stomach, B. Duodenum, C. IIeum, D. Rectum', 'role': 'user'}, {'content': 'Answer: D \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 gigiva and skin biopsy have poor result..', 'role': 'assistant'}]