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': 'Amyloidosis shown in Cardiac muscle is mainly due to …….. fibril \nSelect and explain. \nA. AL, B. AA, C. AANF, D. ATTR', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]