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: Pharmacology
[{'content': 'In a thyroid crisis with hyperpyrexia, tachycardia, vomiting, dehydration and shock the following are usually indicated \nSelect and explain. \nA. Metaraminol, B. Glucocorticoids, C. Intravenous saline, D. Propranolol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A thyroid crisis requires emergency treatment with intravenous fluids, propranolol, hydrocortisone, oral iodine and propylthiouracil or carbimazole', 'role': 'assistant'}]