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': 'Major fibril protein in Primary Amyloidosis is - \nSelect and explain. \nA. AL, B. AA, C. Transthyretin, D. Procalcitonin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: pathology text book harshmohan 7th edition. *AA-secondary amyloidosis. *transthyretin- heeditory neuropathic amyloidosis. *procalcitonin-endocrine amyloidosis.', 'role': 'assistant'}]