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
EMLA is a mixture of lidocaine and: 
Select and explain. 
A. Aicaine, B. Prilocaine, C. Bupivacaine, D. None of the above
B: Prilocaine
Answer: B: Prilocaine 
Explanation: A variety of topical local anesthetic formulations have been developed to penetrate intact skin. EMLA, which is a eutectic mixture of 2.5% lidocaine base and 2.5% prilocaine base, is widely used for venipuncture, intravenous cannulation, skin grafting, and a range of other uses, including circumcision Ref: Miller's anesthesia-7th ed, Chapter 30.