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': 'True about rhinoscleroma are all, EXCEPT: \nSelect and explain. \nA. Caused by Klebsiella pneumonia, B. Slowly progressing granulomatous disease, C. Most common in young adults 20-30 years old, D. Poor nutrition contributes to its spread', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rhinoscleroma is a rare, slowly progressing granulomatous disease of the upper respiratory tract caused by Klebsiella rhinoscleromatis. Nasal disease presents with three typical stages: (1) catarrhal (2) proliferative (3) cicatrical. Rhinoscleroma may be found in all age groups, but typically young adults 20-30 years old are most frequently affected. Airborne transmission combined with poor hygiene, crowded living conditions, and poor nutrition contributes to its spread.', 'role': 'assistant'}]