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
[{'content': 'DOC for compylobactes jejuni is : \nSelect and explain. \nA. Azithromycin, B. Metronidazole, C. Amipicillin, D. Erythromycin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Erythromycin is a macrolide antibiotic which is DOC for Diptheria, Pertussis and dysentry by Campylobactes jejuni.', 'role': 'assistant'}]