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
Best anaesthesia for status asthmaticus – 
Select and explain. 
A. Thiopentone, B. Ketamine, C. Ether, D. N2O
B: Ketamine
Answer: B: Ketamine 
Explanation: Ketamine causes bronchodilatation.