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
Shortest acting benzodiazepine is : 
Select and explain. 
A. Midazolam, B. Alprazolam, C. Lorazepam, D. Diazepam
A: Midazolam
Answer: A: Midazolam 
Explanation: None