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
Antagonist of benzodiazepine is : 
Select and explain. 
A. Naltrexone, B. Flumazenil, C. Naloxone, D. N–Acetyl–cysteine
B: Flumazenil
Answer: B: Flumazenil 
Explanation: None