This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
[{'content': 'Treatment of Helicobacter pylori are EXCEPT \nSelect and explain. \nA. Clarithromycin, B. Cisapride, C. Bismuth subsalicylate, D. Metronidazole', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Cisapride) (1124-CMDT- 08) (949-H17th)Helicobacter pylori* Drug of choice - Amoxicillin + Clarithromycin + Proton pump inhibitor (PPI)* Alternative drugs - Bismuth subsalicylate + Tetracycline + metronidazole + PPI', 'role': 'assistant'}]