This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Which of the following is an ester-linked local anaesthesia? 
Select and explain. 
A. Cocaine, B. Lidocaine, C. Bupivacaine, D. Dubicaine
A: Cocaine
Answer: A: Cocaine 
Explanation: .