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
Which drug of anaesthetics causes hallucination – 
Select and explain. 
A. Ketamine, B. Trilene, C. Halothane, D. Trichloroethylene
A: Ketamine
Answer: A: Ketamine 
Explanation: Ketamine causes emergence reaction (emergence delirium) and hallucination.