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
In theophylline metabolism, drug interactions occurs with all Except : 
Select and explain. 
A. Cimetidine, B. Phenobarbitone, C. Rifamipicin, D. Tetracyclines
D: Tetracyclines
Answer: D: Tetracyclines 
Explanation: None