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: Surgery
In parathyroid crisis with sudden elevations of calcium over 16 mg /dl ; the treatment consist of -a) Intravenous vitamin Db) Parathyroidectomy for removal of adenomac) Thyrocalcitonind) Intravenous bicarbonatee) All of the above 
Select and explain. 
A. bc, B. c, C. ac, D. ad
A: bc
Answer: A: bc 
Explanation: None