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 seen in multiple myeloma, Except - \nSelect and explain. \nA. Lytic bone lesion, B. Hypercalcemia, C. Plasmacytosis of bone marrow > 2%, D. Decreased serum alkaline phosphatase activity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]