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: Dental
[{'content': 'The only reliable method for determining the mode of respiratory function is: \nSelect and explain. \nA. Butterfly test, B. Water test, C. Induction rhinomanometry, D. Halometer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Induction rhinomanometry or plethysmography is considered as gold standard for determining\xa0the mode of respiration in any given individual.', 'role': 'assistant'}]