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': 'Which of the following characterizes mallampati class 3 \nSelect and explain. \nA. Only hard palate visible, B. Both hard palate and soft palate visible, C. Hard palate ,soft palate, uvula and faucial pillars visible, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Both hard and soft palate should be seen in grade 3.', 'role': 'assistant'}]