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: Microbiology
[{'content': 'All are true about campylobacter jejuni except. \nSelect and explain. \nA. Gram negative, B. Gull wing shaped bacteria, C. Warthin starry silver stain is used to demonstrate, D. Erythromycin is DOC', 'role': 'user'}, {'content': "Answer: C \nExplanation: Warthin starry silver stain is used for H.pylori.\nSkirrow's media is used in Campylobacter jejuni.", 'role': 'assistant'}]