This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
Which intravenous anaesthetic agent should be avoided in patient with Bronchoconstriction. 
Select and explain. 
A. Thiopentone, B. Propofol, C. Etomidate, D. Ketamine
A: Thiopentone
Answer: A: Thiopentone 
Explanation: Thiopentone can cause bronchoconstriction/ larygospasm in patients predisposed to it.