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
The intrinsic potency as local anesthetic is the lowest in 
Select and explain. 
A. Lidocaine, B. Procaine, C. Prilocaine, D. Tetracaine
B: Procaine
Answer: B: Procaine 
Explanation: None