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': 'All of the following are major criteria for diagnosing Myeloma except? \nSelect and explain. \nA. Tissue biopsy suggestive of myeloma, B. Bone marrow plasma cells > 30 %, C. IgG level > 35 g/l, D. Lytic bone lesions in X-ray', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Major criteria for diagnosing myeloma includes presence of plasmacytoma on tissue biopsy, bone marrow plasmacytosis (more than 30%), and serum electrophoresis showing monoclonal immunoglobulin spike. Presence of lytic bone lesions is a minor criteria for diagnosing myeloma. Ref: The Washingtom Manual Of Surgical Pathology: Depament Of Pathology , By Peter A Humphrey, Loius P.Dehner, Ohn D. Pfeifer, Page 565.', 'role': 'assistant'}]