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: Pharmacology
Dissociative anaesthesia is seen on administration of : 
Select and explain. 
A. Ether, B. Halothane, C. Enflurane, D. Ketamine
D: Ketamine
Answer: D: Ketamine 
Explanation: None