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
Which of the following drugs is an antagonist to diazepam? 
Select and explain. 
A. Phenergan, B. Flumazenil, C. Domperidone, D. Bromocriptine
B: Flumazenil
Answer: B: Flumazenil 
Explanation: None