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: Pharmacology
Eutectic mixture of 2.5% lidocaine and 2.5% prilocaine is primarily used in: 
Select and explain. 
A. Gasserian ganglion block, B. Gow gates inferior alveolar nerve block, C. Topical skin application, D. Spinal anesthesia
C: Topical skin application
Answer: C: Topical skin application 
Explanation: None