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': "Merciful anosmia is seen in: \nSelect and explain. \nA. Atrophic rhinitis, B. Allergic rhinitis, C. Ethmoidal polyposis, D. Wegener's granulomatosis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: In atrophic rhinitis, there is foul smell from the nose, making the patient a social outcast though the patient himself is unaware of the smell due to marked anosmia which accompanies the degenerative changes. This is called as merciful anosmia.', 'role': 'assistant'}]