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
Which local anaesthetic has highest protein binding capacity – 
Select and explain. 
A. Lignocaine, B. Tetracaine, C. Prilocaine, D. Procaine
B: Tetracaine
Answer: B: Tetracaine 
Explanation: Amongst given options tetracaine has maximum protein binding.