This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
Which intravenous anesthetic agent has local anaesthetic the propeies- 
Select and explain. 
A. Ketamine, B. Propofol, C. Thiopentone, D. Etomidate
A: Ketamine
Answer: A: Ketamine 
Explanation: Ketamine interact with voltage - gated sodium channels sharing binding site with local anesthetic. Local Anesthetics can also bind to other receptors like voltage -gated potassium channels and nicotinic acetylcholine receptors, it is widely accepted that anesthesia and analgesia is by interaction with Na+ channel. Other drugs - ketamine, Tricyclic antidepressant and Anticonvulsant has also effect on Na+ channel.