This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle Relaxant, Subject name: Anaesthesia
Nephrotoxic anaesthetic agent is : 
Select and explain. 
A. Halothane, B. Isoflurane, C. Methoxyflurane, D. Nitrous Oxide
C: Methoxyflurane
Answer: C: Methoxyflurane 
Explanation: Ans. is 'c' Methoxyflurane Methoxyflurane has the highest fluoride content so it is highly NephrotoxicThere is high output renal failure and high chances of Oxalate stone.