This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Microaerophilic bacteria is: \nSelect and explain. \nA. Campylobacter, B. Vibrio cholera, C. Pseudomonas, D. Salmonella', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., CampylobacterRef:(Harrison, 19th/e, p. 1038; Ananthanarayan, 9th/e, p. 400)Microaerophilic bacteria - H. pylori, Campylobacter, B. burgdorferi and T. pallidum.", 'role': 'assistant'}]