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: Medicine
All of the following drugs can be used in hypertensive emergency -a) Trimethaphan b)  I.V. hydralazinec) Indapamided) Sublingual nifedipine 
Select and explain. 
A. abc, B. acd, C. bcd, D. bd
C: bcd
Answer: C: bcd 
Explanation: None