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: Dental
[{'content': 'Incubation period of Lymphogranuloma venerum is: \nSelect and explain. \nA. 1-5 days, B. 5-7 days, C. 60-90 days, D. 10-30 days', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]