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: Gynaecology & Obstetrics
[{'content': 'Granuloma inguinale \nSelect and explain. \nA. Is caused by gardnerella vaginalis, B. Beefy red ulcers that bleed easily, C. Painful inflammatory nodules, D. Short incubation period of 3 days', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Granuloma inguinale is caused by Klebsiella granulomatis. It is painless. It has incubation period of weeks to months (long).', 'role': 'assistant'}]