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
Anaesthestic agent causing adrenal suppression 
Select and explain. 
A. Midazolom, B. Thiopentone, C. Etomidate, D. Propofol
C: Etomidate
Answer: C: Etomidate 
Explanation: None