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
Ciprofloxacin should not be given to an asthmatic using theophylline because : 
Select and explain. 
A. Ciprofloxacin inhibit theophylline metabolism, B. Theophylline inhibits ciprofloxacin metabolism, C. Ciprofloxacin decreases effect of theophylline, D. Theophylline induces metabolism of ciprofloxacin
A: Ciprofloxacin inhibit theophylline metabolism
Answer: A: Ciprofloxacin inhibit theophylline metabolism 
Explanation: None