This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
[{'content': 'A patient arrives in the emergency room in a coma and has a serum Ca 2+ of 4.5 mM. You sta a saline infusion of which of the following drugs \nSelect and explain. \nA. Ethacrynic acid, B. Calcitonin, C. Hydrochlorothiazide, D. Spironolactone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Loop diuretics such as ethacrynic acid , Furosemide increase the excretion of Ca 2+. Ref:- KD Tripathi', 'role': 'assistant'}]