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': 'HOMAR should be carried out for: \nSelect and explain. \nA. 10 sec., B. 15 sec., C. 30 sec., D. 69 sec.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: HOMAR is HOME with Airway Restriction.', 'role': 'assistant'}]