This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc. (W.B.C), Subject name: Pathology
[{'content': 'A patient presents with bone pain. X ray reveals destructive lesions. Lab investigations show shypercalcemia. Serum electrophoresis shows M spike, while Bone marrow shows 35% plasma cells. What is your diagnosis? \nSelect and explain. \nA. MGUS, B. Smoldering myeloma, C. Multiple myeloma, D. Plasma cell leukemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Multiple myeloma(Ref: Robbins 9th/pg 598-602)In the given scenario, patient has bone pain, destructive bony lesions on X Ray, hypercalcemia, M spike and 35% plasma cells in Bone marrow a Diagnostic of Multiple Myeloma', 'role': 'assistant'}]