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
I.V. anesthesia is: 
Select and explain. 
A. Propofol, B. Sevoflurane, C. Flumazanil, D. Naloxane
A: Propofol
Answer: A: Propofol 
Explanation: None