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
All of the following have interaction with warfarin except- 
Select and explain. 
A. Barbiturate, B. Oral contraceptive, C. Cephalosporins, D. Benzodiazepens
D: Benzodiazepens
Answer: D: Benzodiazepens 
Explanation: Ans. is 'd' i.e., Benzodiazepenes