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 anaesthetic drug contributes to green house effect? 
Select and explain. 
A. Enflurane, B. Desflurane, C. Sevoflurane, D. Halothane
B: Desflurane
Answer: B: Desflurane 
Explanation: Ans. is 'b' i.e., Desflurane