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
Which of the following anesthetic drugs produces powerful stimulation of the cerebral cortex 
Select and explain. 
A. Cocaine, B. Procaine, C. Lidocaine, D. Tetracaine
A: Cocaine
Answer: A: Cocaine 
Explanation: None