This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
[{'content': 'Drug used in triple drug therapy of H. Pylori: \nSelect and explain. \nA. Metronidazole, B. Erythromycin, C. Ciprofloxacin, D. Aminoglycosides', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. MetronidazoleH pylori have triple and 4 drug therapy for H. Pylori where 4 antibiotics can be given like amoxicillin, clarithromycin, Metronidazole and tetracycline. Other drugs are PPI like omeprazole and bismuth sub citrate.', 'role': 'assistant'}]