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 a patient who has come for dental extraction, having asthma,is on theophyllin you better avoid 
Select and explain. 
A. Lignocaine, B. Azithromycin, C. Ciprofloxacin, D. Metronidazole
C: Ciprofloxacin
Answer: C: Ciprofloxacin 
Explanation: None