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': 'A patient with multiple myeloma and serum ca2+15mg/dl ; the treatment -a) Oral pamidronateb) Less than 15mg/dl serum calcium dose not causes symptomsc) Mithramycind) Glucocorticoids \nSelect and explain. \nA. abc, B. acd, C. bc, D. bde', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]