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': 'Bone marrow in AL amyloidosis shows - \nSelect and explain. \nA. Bone marrow plasmacytosis, B. Granulomatous reaction, C. Fibrosis, D. Giant cell formation', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Bone marrow plasmacytosiso AL amyloid is due to proliferation of B cells and plasma cells (plasmacytosis).", 'role': 'assistant'}]