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: Anaesthesia
[{'content': 'Mallampati classification is done for \nSelect and explain. \nA. Mobility of the neck, B. Size of the airway, C. Oral cavity of patient for intubation, D. Size of endotracheal tube.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mallampati grading assesses mouth opening.', 'role': 'assistant'}]