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': 'Which of the following is false about conscious sedation? \nSelect and explain. \nA. Patient retains ability to maintain a patent airway, B. Responds appropriately to physical stimulation, C. Responds appropriately to verbal commands, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]