This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: ENT
[{'content': 'Odiosoft rhino is a method used for \nSelect and explain. \nA. Detecting softness of nasal cailages, B. Detecting nasal elasticity, C. Assessing nasal block, D. Detecting nasal mucosal secretory function', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Odiosoft rhino is an equipment used to measure the sound produced by nasal airflow. Measurement of nasal air flow sounds helps us to indirectly assess the presence/absence of nasal block as well as accurately identifying the site of the block. Ref:', 'role': 'assistant'}]