This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'All the following are useful intravenous therapy for hypeensive emergency except \nSelect and explain. \nA. Fenodopam, B. Uradipil, C. Enalaprilat, D. Nifedipine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref Harrison 19 th ed pg 1626 Nifedipine is used as an oral/sublingual agent . It is not available for intravenous administration.', 'role': 'assistant'}]