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': 'Drug of choice for Hypertensive emergency is \nSelect and explain. \nA. IV Clevidipine, B. IV Nicardipine, C. IV Diltiazem, D. IV Verapamil', 'role': 'user'}, {'content': 'Answer: B \nExplanation: IV Nicardipine is the drug of choice for hypertensive emergency followed by IV Clevidipine.\nThese are calcium channel blockers and\xa0β - blockers should be given along with them to prevent tachycardia.', 'role': 'assistant'}]