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
[{'content': 'Which intravenous anaesthetic agent should be avoided in patient with Bronchoconstriction. \nSelect and explain. \nA. Thiopentone, B. Propofol, C. Etomidate, D. Ketamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thiopentone can cause bronchoconstriction/ larygospasm in patients predisposed to it.', 'role': 'assistant'}]