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': 'All are the cause of Atrophic Rhinitis except \nSelect and explain. \nA. Klebsiella ozanae, B. Progesteron deficiency, C. Vitamin A deficiency, D. Auto - Immune', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]