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
OCP fail when used with any of the following except: 
Select and explain. 
A. Ethoxsuccimide, B. Phenytoin, C. Rifampin, D. Tetracycline
D: Tetracycline
Answer: D: Tetracycline 
Explanation: Tetracycline