This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
Which of the following compounds acts as a benzodiaz epine antagonist? 
Select and explain. 
A. Flumazenil, B. Naloxone, C. Furazolidone, D. Naltrexone
A: Flumazenil
Answer: A: Flumazenil 
Explanation: A specific BZD antagonist flumazenil is used for BZD poisoning ,it is a BZD analogue which has little intrinsic activity (no effect on normal subject), but competes with BZD agonist as well as inverse agonist for BZD receptor &reverse its effect . Ref: KD tripathi 8th ed.