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
Flumazenil, false is? 
Select and explain. 
A. It is specific antagonist of BZD, B. It may be used in barbiturate poisoning as it acts on the same receptor i.e. GABAA, C. Given intravenously, D. Acts on GABAA receptor
B: It may be used in barbiturate poisoning as it acts on the same receptor i.e. GABAA
Answer: B: It may be used in barbiturate poisoning as it acts on the same receptor i.e. GABAA 
Explanation: Ans. is 'b' i.e., It may be used in barbiturate poisoning as it acts on the same receptor i.e. GABAA Flumazenil is specfic antagonist of BZDs, i.e., it acts on BZDs binding site of GABAA receptors, which is different from Baributurate binding site. Therefore, flumazenil does not antagonize barbiturates =, not effective in barbiturates poisoning.