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 statements are true regarding benzodiazepines ? a) It acts as GABA agonist b) Diazepam is a short acting benzodiazepine c) Diazepam causes lesser respiratory depression than midazolam d) Nitrazepam is metabolized in liver e) Diazepam has higher abuse potential than mida-zolam 
Select and explain. 
A. abc, B. cd, C. ae, D. ad
B: cd
Answer: B: cd 
Explanation: None