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': 'Causative agents of "Vincent\'s angina" \nSelect and explain. \nA. Borrelia vincenti and fusobacterium fusiformis, B. Borrelia recurrents and bacteroides, C. Borrelia burgoloferi and lactobacillus, D. Leptospira and Treponema pallidum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]