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': 'Hypercalcemia is decreased by all of the following EXCEPT: March 2003, 2007 \nSelect and explain. \nA. Etidronate, B. Calcitonin, C. Lithium, D. Glucocoicoids', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Lithium', 'role': 'assistant'}]