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
Interaction of theophylline with ciprofloxacin is : 
Select and explain. 
A. Ciprofloxacin increases theophylline metabolism, B. Ciprofloxacin decreases theophylline metabolism, C. Theophylline increases ciprofloxacin metabolism, D. Theophylline decreases ciprofloxacin metabolism
B: Ciprofloxacin decreases theophylline metabolism
Answer: B: Ciprofloxacin decreases theophylline metabolism 
Explanation: None