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 one of the following inhalational anaesthetic agents has rapid onset and rapid recovery actions and is most desirable for use day case (out patient) surgical procedures – 
Select and explain. 
A. Ether, B. Halothane, C. Trichloroethylene, D. Desflurane
D: Desflurane
Answer: D: Desflurane 
Explanation: Desflurane has least B : G partion coefficient fastest induction & recovery.