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
Local anaesthesia causing methemoglobinemia – 
Select and explain. 
A. Procaine, B. Prilocaine, C. Etodicaine, D. Ropivacaine
B: Prilocaine
Answer: B: Prilocaine 
Explanation: Prilocaine and benzocaine can cause methemoglobinemia.