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: Medicine
[{'content': 'Which is not a minor criteria of Multiple Myeloma? \nSelect and explain. \nA. Multiple lytic lesions, B. Plasmacytosis > 20%, C. Plasmacytoma in tissue, D. S. IgG > 3gm, IgA > 1.5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Plasmacytoma on Tissue Biopsy) Plasmacytoma on tissue biopsy iv a major criterion for diagnosis of Multiple Myeloma and not a minor criterion.', 'role': 'assistant'}]