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: ENT
[{'content': 'Rhinoscleromatis is caused by - \nSelect and explain. \nA. Klebseilla, B. Autoimmune, C. Spirochetes, D. Rhinosporidium.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rhinoscleroma is caused by Klebsiella rhinoscleromatis or Frisch bacillus.', 'role': 'assistant'}]