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: Anaesthesia
Induction agent that may cause adrenal cortex suppression is 
Select and explain. 
A. Ketamine, B. Etomidate, C. Propofol, D. Thiopentone
B: Etomidate
Answer: B: Etomidate 
Explanation: Synthesis of adrenal steroids (both mineral and glucocorticoids) is inhibited by etomidate.