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': 'Amyloid (AA) originates from - \nSelect and explain. \nA. RBC, B. Plasma cell, C. Reticulo-endothelial cell, D. Lymphocytes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is option 3 Amyloidosis: origin from fixed periodic acid-Schiff positive reticuloendothelial cells in loco and basic factors in pathogenesis. httpp://www.ncbi.nlm.nih.gov.in', 'role': 'assistant'}]