This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pharmacology
[{'content': 'In theophylline metabolism, drug interactions Occur with all Except: \nSelect and explain. \nA. Cimetidine, B. Phenobarbitone, C. Rifamipine, D. Tetracyclines', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Phenobarbitone, rifampin enhance theophylline metabolism Cimetidine inhibits theophylline metabolism ESSENTIALS OF MEDICAL PHARMACOLOGY 7TH EDITION KD TRIPATHI Page No:226,227', 'role': 'assistant'}]